Someone please explain this to me in a bit of detail [duplicate]

public class DataContext : DbContext {
    public DataContext(DbContextOptions options) : base(options) { }
    public DbSet<AppUser> Users { get; set; }
}  

I know DataContext inherits from DbContext and Users is a table name. But why am I writing public DataContext(DbContextOptions options) : base(options) { } and what is DbContextOptions options and why it is inheriting from base(options)?