Which method is best suited to disable RPF without affecting features like antivirus and intrusion prevention system?

An administrator must disable RPF check to investigate an issue.

Which method is best suited to disable RPF without affecting features like antivirus and intrusion prevention system?
A . Enable asymmetric routing, so the RPF check will be bypassed.
B. Disable the RPF check at the FortiGate interface level for the source check.
C. Disable the RPF check at the FortiGate interface level for the reply check .
D. Enable asymmetric routing at the interface level.

Answer: B

Explanation:

Reference: https://kb.fortinet.com/kb/documentLink.do?externalID=FD33955