An engineer must perform a nondisruptive software upgrade on a dual supervisor Cisco Nexus 7000 series switch. What is the cause of the upgrade being disruptive?
A. The show install all impact command is not issued before the upgrade
B. The kickstart image is installed by using the Install all kickstart image system image command
C. Attempt to simultaneously upgrade more than three cards
D. Change to the configuration settings or the network connections during the upgrade process
