Which two statements are true about instance recovery in a RAC environment?

Which two statements are true about instance recovery in a RAC environment?

A.
Parallel instance recovery will work even if the recovery_parallelism initialization parameter set to 0 or 1.

B.
Increasing the size of the default buffer cache can speed up instance recovery because instance recovery may use as much as 50 percent of the default buffer cache for recovery buffers.

C.
The fast_start_mttr_target initialization parameter includes both instance startup and recovery time.

D.
The fast_start_mttr_target initialization parameter specifies only the instance recovery time.