You are the network administrator for . The network consists of a single Active Directory domain. All domain controllers run Windows Server 2003, and all client computers run Windows XP Professional. TestKing acquires a subsidiary. You receive a comma delimited file that contains the names of all user accounts at the subsidiary. You need to import these accounts into your domain. Which command should you use?（）

• A、ldifde
• B、csvde
• C、ntdsutil with the authoritative restore option
• D、dsadd user