By default, which traffic can pass through a Cisco ASA that is operating in transparent mode without explicitly allowing it using an ACL?

A.
ARP

B.
BPDU

C.
CDP

D.
OSPF multicasts

E.
DHCP

Explanation:
http://www.cisco.com/en/US/docs/security/asa/asa82/configuration/guide/fwmode.html