A colleague implemented cascaded SRDF for a VMAX technology refresh and site relocation activity.
The colleague reports they shutdown the hosts at production Site A and copied all data to the bunker Site B VMAX. But they are unable to enable SRDF/S between Site B and remote Site C.
What should you advise them?

A.
SRDF/S is not supported on the second leg of a cascaded SRDF implementation.

B.
Enable SRDF/A on the first leg and then enable SRDF/S on the second leg.

C.
Suspend SRDF/S on the first leg and then enable SRDF/S on the second leg.

D.
The Site B devices must be converted to use concurrent SRDF.