Alice and Bob use the Diffie-Hellman key exchange protocol to negotiate a shared secret. They agree on two parameters, where p=17 and g=4. Alice selects 3 as her private key (i.e., the secret number). Bob selects 6 as his private key (i.e., the secret number). A.1. What is the public key sent from Alice to Bob? (25\%) A.2. What is the public key sent from Bob to Alice? (25\%) A.3. What is the negotiated shared key (i.e., the shared secret)? (50\%)