Refer to the network exhibit.

Switch_A and Switch_B are HP Comware switches currently in the same MSTP region with the
following MSTP configuration:
• Region name: HP
• Revision number 1
• Instance 1:VLANs 10 and 11
• Instance 2: VLANs 12 and 13
• Instance 0: VLANs 1-9 and 14-4094
MSTP is operating correctly on Switch_A and Switch_B. Switch_C and Switch_D are new
Comware switches and have been added to the network. The links between the switches are
trunks, where VLAN 1 is the PVID and all other VLANs are permitted on the trunks. The only STP
command executed on the two new switches is stp enable. Based on this information, what is the
resulting Layer 2 topology?

A.
All uplinks are blocked until the new switches have MSTP configured correctly.

B.
A Layer 2 loop will result, creating a broadcast storm,

C.
Only one uplink from each new switch will be utilized.

D.
Both uplinks from the new switches are utilized but load sharing is inefficient

Explanation: