What is a supported mode combination for disk-based Cascaded SRDF?

A.
First leg – SRDF/S Second leg – SRDF/A

B.
First leg – SRDF/A Second leg – SRDF/A

C.
First leg – SRDF/S Second leg – SRDF Adaptive Copy Write Pending Mode

D.
First leg – SRDF/S Second leg – SRDF/S