Which of the following are two possible upgrade states for a node in ACI? (Choose two.) 

Answer options:

A. CompleteNOK
B. upgrading
C. CompleteOK
D. failed
E. aborted AC

Explanation

Reference: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/aci/apic/sw/1-x/Operating_ACI/guide/b_Cisco_Operating_ACI/ b_Cisco_Operating_ACI_chapter_0101.html