What are three situations that may cause an ISSU failure? (Choose three.)
A. A module is removed while the upgrade is in progress.
B. A proper ISSU license is not in place.
C. The device has a power disruption while the upgrade is in progress.
D. A line card is in a failure state.
E. The specified system and kickstart images are not compatible.
F. The management interface is not in the correct VRF.
G. The secondary supervisor is not installed.
H. The redundancy force-switchover command was used during the ISSU.
