What are two default behaviors of the traffic on a zone based firewall? (Choose two)

What are two default behaviors of the traffic on a zone based firewall? (Choose two)
A . All traffic between zones is implicitly blocked
B . Communication is allowed between interfaces that are members of the same zone
C . The CBAC rules that are configured on router interfaces apply to zone interfaces.
D . Traffic within the self zone uses an implicit deny all
E . Communication is blocked between interfaces that are members of the same zone

Answer: AB