A Symmetrix is configured with the two RDF Groups RDFG 1 and RDFG 2 as shown in the exhibit.

The SRDF R1 devices used by Application 1 (App 1) and Application 2 (App 2) are in RDFG 1.
The SRDF devices used by Application 3 are in RDFG 2.
What should be created to enable SRDF/A for applications 1 and 2?

A.
One device group with all the devices in RDFG 1

B.
One file with all the devices in RDFG 1 and RDFG 2

C.
Two device groups; one with the App 1 devices and another with the App 2 devices

D.
Two files; one with the App 1 devices and another with the App 2 devices