Which three of these would cause two switch fabrics not to merge?

Which three of these would cause two switch fabrics not to merge? (Choose three.)
A. Two or more switches do not have at least one assigned domain ID in common.
B. Two switches have different assigned VSANs on the connecting ports.
C. Two switches have different assigned VLANs on the connecting ports.
D. The static domain ID does not override the dynamic ID.
E. The election of the static domain is only determined by the WWNs of the two switches.
F. The physical connectivity between the two switches is not active.