You are a network administrator for your company. The network consists of a single Active Directory domain. The domain contains three Windows Server 2003 domain controllers， 20 Windows Server 2003 member servers， and 750 Windows XP Professional computers. The domain is configured to use only Kerberos authentication for all server connections.A user reports that she receives an "Access denied" error message when she attempts to connect to one of the member servers. You want to test the functionality of Kerberos authentication on the user’s client computer. Which command should you run from the command prompt on the user’s computer？（）

A. netsh
B. netdiag
C. ktpass
D. ksetu