What is the reason this message is being generated?

An administrator is updating disk firmware using LCM and receives the following message:

“there have been 10 or more cluster services restarts within 15 minutes in the Controller VM”

The message appears as each drive is upgraded.

What is the reason this message is being generated?
A . A node has been rebalanced
B . A drive has been reformatted
C . A node has been rebooted
D . A drive has been ejected

Answer: C

Explanation:

Ref: https://portal.nutanix.com/page/documents/kbs/details?targetId=kA032000000TT8DCA W