For Management High Availability, if an Active SMS goes down, does the Standby SMS automatically take over?

For Management High Availability, if an Active SMS goes down, does the Standby SMS automatically
take over?

A.
Yes, if you set upCluster XL

B.
Yes, if you set up SecureXL

C.
No, the transition should be initiated manually

D.
Yes, if you set up VRRP