Which of the following is true with respect to active-active failover on the ASA ?

A.
Active-active failover is available for systems running in multiple or single context mode

B.
Active-active failover is available only for system running in multiple context mode

C.
Active-active failover is available only for systems running in transparent mode

D.
Active-active failover is available only for systems running in routed mode

E.
Active-active failover is available only for systems running in single context mode