Which statements about the MEMORY_TARGET initialization parameter are true? (Choose all that apply.)
A.
MEMORY_TARGET can be increased up to the value of MEMORY_MAX_TARGET, if MEMORY_MAX_TARGET is set to a value greater than zero
B.
MEMORY_MAX_TARGET defaults to a value of zero if MEMORY_TARGET is not set
C.
MEMORY_TARGET represents the total amount of memory that can be allocated to SGA and PGA memory structures.
D.
MEMORY_TARGET is static and cannot be modified without shutting down the instance