（单选题）
Why would you use WebLogic Diagnostics Framework （WLDF） instead of Oracle Enterprise Manager （OEM） （）
A WLDF has better performance than OEM
B my organization already has a solution for unified management and monitoring； we need to supplement that with some specific WLS-related capabilities
C OEM is not certified with latest version of WLS
D OEM is really focused on the database tier， is not meant to address JEE management and monitoring
正确答案
答案解析
略
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