What are two benefits of using an IPsec GRE tunnel? (Choose two.)
A.
It allows dynamic routing protocol to run over the tunnel interface.
B.
It has less overhead than running IPsec in tunnel mode.
C.
It allows IP multicast traffic.
D.
It requires a more restrictive crypto ACL to provide finer security control.
E.
It supports the use of dynamic crypto maps to reduce configuration complexity.