Your network contains one Active Directory domain. All domain controllers run Windows Server 2003 Service Pack 2 (SP2). You have a comma delimited file that contains information for 2,000 new employees. You need to create 2,000 new user accounts by using the information in the file. You must achieve this goal by using the minimum amount of administrative effort. Which tool should you use? （）

A. Csvde.exe
B. Dsmod.exe
C. ldifde.exe
D. Ntdsutil.exe