What does the Message Level Encryption feature of IBM Tivoli Endpoint Manager V8.2 do?

A.
It enables clients to encrypt upstream data using a combination of a RSA public/private
key-pair and an AES session key.

B.
It enables the root server to encrypt downstream data using a combination of a RSA
public/private key-pair and an AES session key.

C.
It enables the root server and relays to encrypt upstream data using a combination of a
RSA public/private key-pair and an AES session key.

D.
It enables clients and the root server to encrypt both upstream and downstream data
using a combination of a RSA public/private key-pair and an AES session key.