What does the command SCF PRIMARY SUBSYS $ZZSTO, 2, DEFAULT do?

A.
Primary $ZZSTO to CPU 2

B.
Primary $ZZSTO to CPU 2 and run as a default

C.
Primary storage subsystem IOPs in the group 02 topology branch to CPU 2

D.
Primary storage subsystem IOPs in the group 02 topology branch that configured with
PRIMARYCPU 2 to CPU 2