[单选题]View Exhibit1 and Exhibit2 to examine the current 

A because the DB_CACHE_ADVICE parameter is set to OFF

B because Automatic Memory Management （AMM） is disabled for the database instance

C because Automatic Shared Memory Management （ASMM） is enabled for the database instance

D because the values for the DB_CACHE_SIZE and SHARED_POOL_SIZE parameters were not setinitially