Which PKCS is invoked during IKE MM5 and MM6 when digital certificates are used as the authentication method?

Which PKCS is invoked during IKE MM5 and MM6 when digital certificates are used as the
authentication method?

A.
PKCS#7

B.
PKCS#10

C.
PKCS#13

D.
PKCS#11

E.
PKCS#3

Explanation: