Which three statements about SCEP are true?(Choose three)
A. It Supports online certification revocation.
B. Cryptographically signed and encrypted message are conveyed using PKCS#7.
C. The certificate request format uses PKCS#10.
D. It supports multiple cryptographic algorithms, including RSA.
E. CRL retrieval is support through CDP (Certificate Distribution Point) queries.
F. It supports Synchronous granting.
