You are a network engineer at a company that just purchased a DX connection. You ensured your equipment met all of the technical requirements, you have verified with your AWS account manager and your colocation provider that everything is connected, and all of your information is correct. For some reason, the link does not operate correctly.
What could be the problem?

A. The CAT6 cable is frayed.
B. Autonegotiation is enabled.
C. You are using 802.1q VLANs instead of 802.1w.
D. BFD is disabled.