A company has a large data center with hundreds of AIX and Linux OS images on both stand-alone and LPARed machines. They are likely to undergo some downsizing in the near future. The IT Director is concerned with their ability to manage the environment with fewer staff members. What software should the pSeries technical specialist recommend to the customer to provide for more efficient management， quicker provisioning， and monitoring？（）

A. TSM
B. CSM
C. NIM
D. PSSP