Difference between AddSingleton vs AddScoped vs AddTransient in asp.net core

create.cshtml

@model Mobile
@inject IMobileService mobiledata
@{
    ViewData["Title"] = "Create";
}
    <form asp-controller="home" asp-action="create" method="post">
        <div>
            <label asp-for="name"></label>
            <div>
                <input asp-for="name">
            </div>
        </div>
        <div>
            <label asp-for="model"></label>
            <div>
                <input asp-for="model">
            </div>
        </div>
        <div>
            <label asp-for="price"></label>
            <div>
                <input asp-for="price">
            </div>
        </div>

        <div>
            <button type="submit">Create</button>
        </div>

        <div>
            Total Employees Count = @mobiledata.GetAll().Count().ToString()
        </div>
    </form>