What are two functions of IPv6 Source Guard? (Choose two.)

What are two functions of IPv6 Source Guard? (Choose two.)

A. It works independent from IPv6 neighbor discovery. B. It denies traffic from unknown sources or unallocated addresses. C. It uses the populated binding table to allow legitimate traffic. D. It denies traffic by inspecting neighbor discovery packets for specific patterns. E. It blocks certain traffic by inspecting DHCP packets for specific sources.