Which three statements about OCSP are correct? (Choose three.)
A.
OCSP is defined in RFC2560.
B.
OCSP uses only http as a transport.
C.
OCSP responders can use RSA and DSA signatures to validate that responses are from
trusted entities.
D.
A response indicator may be good, revoked, or unknown.
E.
OCSP is an updated version SCEP.
Explanation: