You are developing an ASP.NET MVC application that uses forms authentication against a third-party
database.
You need to authenticate the users.
Which code segment should you use?

A.
Option A

B.
Option B

C.
Option C

D.
Option D

Explanation:
ASP.NET membership is designed to enable you to easily use a number of different membership providers for
your ASP.NET applications.
There are two primary reasons for creating a custom membership provider.
* You need to store membership information in a data source that is not supported by the membership
providers included withthe .NET Framework, such as a FoxPro database, an Oracle database, or other data
sources.
* You need to manage membership information using a database schema that is different from the database
schema used by the providers that ship with the .NET Framework.
To implement a membership provider, you create a class that inherits the MembershipProvider abstract class
from the System.Web.Security namespace.
Incorrect:
Not C: Class ProviderBase
The provider model is intended to encapsulate all or part of the functionality of multiple ASP.NET features, such
as membership, profiles, and protected configuration.
https://msdn.microsoft.com/en-us/library/f1kyba5e.aspx