Which SCF command changes the interval between loss of AC powerand a power fail condition to 40 seco

Which SCF command changes the interval between loss of AC powerand a power fail condition
to 40 seconds?

A.
ALTER SUBSYS $ZZKRN, POWERFAIL_DELAY_TIME 40

B.
ALTER SUBSYS $ZZKRN, SYSTEM_RIDE_THROUGH 40

C.
ALTER PROCESS $ZZKRN, POWERFAIL_DELAY_TIME 40

D.
ALTER PROCESS $ZZKRN, SYSTEM_RIDE_THROUGH 40