Which two statements about VACLs on Cisco Nexus 7000 Series Switches are true？ （）

• A、 A single VACL can be shared across two or more VDCs.
• B、 Use of VACLs requires no special license to be installed.
• C、 VACLs make use of IP or MAC ACLs.
• D、 Only options drop and forward are permitted.