Refer to the Exhibit. Under normal conditions, SW1 is spanning tree root and the link between SW2 AND SW3 is in the blocking state. This network transports large amounts of traffic and is heavily loaded. After a software upgrade to these switches, users are complaining about slow performance. To troubleshoot, the commands shown in the exhibit are entered. What two are the most likely causes of this issue?
A.
Duplex mismatch on the link between SW1 and SW3 causing high rate of collisions
B.
The bridge priority of SW1 was changed to be greater than 32768 allowing SW2 to become the new root of the spanning tree.
C.
UDLD has not been configured between SW1 and SW3 so SW3 errantly sees its link to SW1 as up and operational.
D.
Lack of BPDUs from high priority bridge SW1 causes SW3 to unblock Fa1/1
E.
The Max Age timers on SW1 and SW2 have been changed and no longer match the MAX Age timer on SW3