What is most likely causing this alert?

An administrator completed a successful AOS upgrade, but saw the following alert the following day:

Detected incompatible AHV version.

What is most likely causing this alert?
A . The upgraded AOS version is incompatible with AH
C . AHV was upgraded manually prior to AOS upgrade.
D . AHV is not at the version that carte with the upgraded AO
F . NCC version is not compatible with the current AHV version.

View Answer

Answer: C