Your network contains an Active Directory domain.
The domain contains 1,000 user accounts.
You have a listthat contains the mobile phone number of each user.
You need to add the mobile number of each user to Active Directory.
What should you do?

A.
Create a file that contains the mobile phone numbers, and then run ldifde.exe.

B.
Create a file that contains the mobile phone numbers, and then run csvde.exe.

C.
From Adsiedit, select the CN=Users container, andthen modify the properties of the container.

D.
From Active Directory Users and Computers, selectall of the users, and then modify the properties of the
users.

Explanation:
CSVDE can only import and export data from AD DS.
http://technet.microsoft.com/en-us/library/cc732101.aspx
Reference:
http://technet.microsoft.com/en-us/library/cc731033.aspx
Ldifde
Creates, modifies, and deletes directory objects.