What describes IBM maintenance remote support security features for the IBM TS4500?

What describes IBM maintenance remote support security features for the IBM TS4500?
A . Customer data on tape or in memory is encrypted for transmission during remote support sessions
B . Dial-in is restricted through the IMC, requiring separate logins for each attached system
C . IBM TS4500 call-home support defaults to email notification rather than direct dial-in
D . IBM TS4500 tape library supports password protected dial-in via telnet or ftp.

Answer: B