Which two are true about automatic PGA memory management?

Which two are true about automatic PGA memory management?

A.PGA_AGGREGATE_TARGET cannot be configured if SGA_TARGET is configure.

B.The pGA is auto-tuned whether or not PGA_AGGREGATE_TARGET is explicitly set.

C.PGA_AGGREGATE_TARGET cannot be configured if MEMORY_TARGET is configured.

D.Memory is allocated separately for PGA_AGGREGATE_TARGET and SGA_TARGET.

E.PGA_AGGREGATE_TARGET always defaults to zero.

正确答案是BD