Which statements about an IPv6-over-IPv4 IPsec configuration are correct?

Which statements about an IPv6-over-IPv4 IPsec configuration are correct?

(Choose two.)

Response:
A . The remote gateway IP must be an IPv6 address.
B . The source quick mode selector must be an IPv4 address.
C . The local gateway IP must an IPv4 address.
D . The destination quick mode selector must be an IPv6 address.

Answer: CD