Which two statements are true?

An IPsec tunnel is established on an SRX Series Gateway on an interface whose IP address was obtained using DHCP.Which two statements are true? (Choose two.)

A.
Only main mode can be used for IKE negotiation.

B.
A local-identity must be defined.

C.
It must be the initiator for IKE.

D.
A remote-identity must be defined.