Which Is NOT True About Development of IPSec

Multiple Choice

Which is NOT true about development of IPSec?

A) IPSec is built into Windows operating systems such as Windows XP Internet Connection Firewall.
B) IPSec requires sending and receiving devices to share a single encryption key.
C) IPSec provides two encryption modes and no additional protocols for encrypting data.
D) IPSec was developed by the IETF to support secure exchange of packets.