Briefing Fortinet Knowledge

which statement is true?

Referring to the exhibit, which statement is true?

A.
The packet failed the HMAC validation.

B.
The packet did not match any of the local IPsec SAs.

C.
The packet was protected with an unsupported encryption algorithm.

D.
The IPsec negotiation failed because the SPI was unknown.

Explanation:
http://kb.fortinet.com/kb/viewContent.do?externalId=FD33101