Which three statements are correct when comparing Mobile IPv6 and Mobile IPv4 support? (Choose three.) 

Answer options:

A. Mobile IPv6 does not require a foreign agent, but Mobile IPv4 does.
B. Mobile IPv6 supports route optimization as a fundamental part of the protocol; IPv4 requires extensions.
C. Mobile IPv6 and Mobile IPv4 use a directed broadcast approach for home agent address discovery.
D. Mobile IPv6 makes use of its own routing header; Mobile IPv4 uses only IP encapsulation.
E. Mobile IPv6 and Mobile IPv4 use ARP for neighbor discovery.
F. Mobile IPv4 has adopted the use of IPv6 ND.

ABD