In Oracle 11g,by default which one of the following conditions implicitly enables Automatic PGA Memory Management?()  
A: Setting a nonzero value for SGA_TARGET
B: Configuring Automatic Shared Memory Management
C: Configuring Automatic Memory Management
D: Setting a nonzero value for SGA_MAX_SIZE and PGA_AGGREGATE_TARGET
E: None of the above
出自:Oracle认证