Which process is resp*****ible for monitoring an IT Service and detecting when the
performance drops below acceptable limits?
A. Service Level Management
B. Performance Management
C. Capacity Management
D. Event Management
请问高手们，这道题目选择什么呢？ 看到了两个答案。迷糊中！！！

LZ敢整点更有创意的不？兄弟们等着围观捏~

前排顶，很好！