Reading data from appsettings.json file from a class libary?

I am building a class library for an MVC app and need to read data from the appsettings.json file but am running into a NullReferanceExpecption. This this possible to do and if so what am I missing?

Appsettings.json file:

{"AppSettings":
    {"AppVersion": "2.0.0"
    },"Data":
    {"JobSightDatabase":
        {
        }
    }
}

Startup.cs:

    public class Startup
    {
        public IConfigurationRoot Configuration { get; set; }

        public Startup(IHostingEnvironment env)
        {
            //Set up configuration sources.
            var builder = new ConfigurationBuilder()
                .AddJsonFile("appsettings.json")
                .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: true)
                .AddEnvironmentVariables();

            Configuration = builder.Build();
        }

        // This method gets called by the runtime. Use this method to add services to the container.
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvc();
            services.AddCaching();

            services.AddSession(o =>
            {
                o.IdleTimeout = TimeSpan.FromSeconds(10);
            });

            services.Configure<AppSettings>(Configuration.GetSection("AppSettings"));
        }

        // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
        public void Configure(IApplicationBuilder app, IHostingEnvironment env)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
            }

            app.UseExceptionHandler("/Error/ServerError");
            app.UseIISPlatformHandler();
            app.UseSession();
            app.UseStaticFiles();
            app.UseStatusCodePagesWithReExecute("/Error/PageNotFound");
            app.UseMvc();
        }

        // Entry point for the application.
        public static void Main(string[] args) => WebApplication.Run<Startup>(args);
    }

test.cs:

    public class test
    {
        protected static IOptions<AppSettings> _AppSettings;

        public test(IOptions<AppSettings> AppSettings)
        {
            _AppSettings = AppSettings;
        }

        public static string GetAppVersion()
        {
            return _AppSettings.Value.AppVersion;
        }
    }

That is the code I am using. When I go into my class and do something like

var AppVersion = test.GetAppVersion();

I get the NullReferanceException error. I have seen a few blogs that show how to do this in a controller (in fact they are how I got this far) but none for class library, help please!