Which two statements are correct about IPSec-over-GRE tunnels? (Choose two.)

A.
You can use the same endpoint IP addresses for both the IPSec and GRE tunnels.

B.
You must use a next-hop-style service set when configuring an IPSec-over-GRE tunnel.

C.
You must use a next-hop-style service set in order to send multicast traffic over an IPSec-over-GRE tunnel.

D.
You can send multicast traffic over an IPsec-over-GRE tunnel.