Which of these correctly identifies a difference between the way BPDUs are handled by 802.1w and 802.1D?()
- A802.1D bridges do not relay BPDUs.
- B802.1w bridges do not relay BPDUs.
- C802.1D bridges only relay BPDUs received from the root.
- D802.1w bridges only relay BPDUs received from the root.