Into which category of MITRE tactics does out of box Identity Analytics rules fall?

Answer options:

A.Initial Access
B.Execution
C.Collection
D.Privilege escalation

Correct Answer: A
Option A is correct. Identity based attacks and its relevant rules comes under Initial Access and Credential Access categories of MITRE ATT&CK tactics.
Option B, C & D are incorrect. Any identity based rules are not applicable under these tactics.
Reference: 

https://docs.microsoft.com/en-us/azure/sentinel/fusion