Refer to the Cisco IOS XR commands exhibit.
RP/0/RSP0/CPU0:PE7#install activate disk0:asr9k-video-p-4.1.0 ^ % Invalid input detected at '^' marker RP/0/RSP0/CPU0:PE7#show user all Tue Sep 20 21 39 00.331 UTC Username admin Groups: root-system <output omitted>
The router administrator is trying to activate a software package on the router but is not able to do so. Which statement about this problem is true?

A.	The router needs to be in the global configuration mode.
B.	The router needs to be in the admin global configuration mode.
C.	The router needs to be in the admin EXEC mode.
D.	The install activate command is not the correct command to use.
E.	The administrator needs to log in as the “root” user instead of the “admin” user.