You create a method that runs by using the credentials of the end user.

You create a method that runs by using the credentials of the end user.  You need to use
Microsoft Windows groups to authorize the user. You must add a code segment that identifies
whether a user is in the local group named Clerk.
Which code segment should you use?


A. Dim objUser As WindowsIdentity = WindowsIdentity.GetCurrentFor Each objGroup
    As IdentityReference In objUser.Groups
    Dim objNT As NTAccount = _
    DirectCast(objGroup.Translate( _
    Type.GetType("NTAccount")), NTAccount)
    Dim blnAuth As Boolean = objNT.Value.Equals( _
    Environment.MachineName & "\Clerk")
    If blnAuth Then Exit ForNext

B. Dim objUser As WindowsPrincipal = _
    DirectCast(Thread.CurrentPrincipal, WindowsPrincipal)Dim blnAuth As Boolean =
    objUser.IsInRole("Clerk")

C. Dim objUser As GenericPrincipal = _
    DirectCast(Thread.CurrentPrincipal, GenericPrincipal)Dim blnAuth As Boolean =
    objUser.IsInRole("Clerk")

D. Dim objUser As WindowsPrincipal = _
    DirectCast(Thread.CurrentPrincipal, WindowsPrincipal)Dim blnAuth As Boolean = _
    objUser.IsInRole(Environment.MachineName)


Answer: B