Which two options would cause switch fabrics not to merge?

Which two options would cause switch fabrics not to merge? (Choose two.)
A. The swtches have different assigned VSANs on the connecting pons.
B. The swtches do not have at least one assigned domain ID in common.
C. The election of the static domain is ony determined by the WWNs of the two switches.
D. The switches have different assigned VLANs on the connecting ports.
E. The static domain ID does not override the dynamic ID