Refer to the exhibit. How are the STP BPDUs forwarded over Cisco ACI fabric?
A. STP BPDUs that are generated by Switch2 are received by Switch1 and Switch3.
B. Cisco ACI fabric drops all STP BPDUs that are generated by the external switches.
C. Cisco ACI acts as the STP root for all three external switches.
D. STP BPDUs that are generated by Switch1 are received only by Switch3.
D is the correct answer – due to the vlan pools being separate