[单项选择] Given this fragment in a servlet: 23.if(req.isUserInRole("Admin")) { 24.// do stuff 25.} And the following fragment from the related Java EE deployment descriptor: 812. 813.Admin 814.Administrator 815. 900. 901.Admin 902.Administrator 903. What is the result?() A. Line 24 can never be reached. B. The deployment descriptor is NOT valid. C. If line 24 executes, the user’s role will be Admin. D. If line 24 executes, the user’s role will be Administrator. E. If line 24 executes the user’s role will NOT be predictable.