Examine the following protocols, which two are used for IP Security?
A. Generic Routing Encapsulation (GRE) and Internetwork Packet Exchange (IPX)(EIGRP)
B. Border Gateway Protocol (BGP) and Enhanced Interior Gateway Routing Protocol
C. Authentication Header (AH) and Encapsulating Security Payload (ESP)
D. Virtual Private Dial-Up Network (VPDN) and GRE
