Which of the following actions performed on Switch 2 would enable the desired configuration?

You have three switches connected as shown in the diagram below: S1, S2, and S3.

You instructed your assistant to configure the switches so that the following requirements would be met:
Switch 1 should be the root bridge for VLAN A
VLAN C should forward over the Gig 1/0/1 link between Switch 2 and Switch 3 VLAN B should forward over the Gig 1/0/2 link between Switch 2 and Switch 3
However, after your assistant performs the configuration, you discover that:
Switch 2 is the root bridge for VLAN A
VLAN C is forwarding over the Gig 1/0/2 link between Switch 2 and Switch 3 VLAN B is forwarding over the Gig 1/0/1 link between Switch 2 and Switch 3
When you execute the show spanning tree command on Switch 2, you determine that all link costs and priorities are set at the defaults.
Which of the following actions performed on Switch 2 would enable the desired configuration? (Choose three.)
A. switch2(config)# spanning-tree vlan a priority 61440
B. switch2(config)# spanning-tree vlan a priority 1
C. switch2(config)# int G1/0/2switch2(config-if)# spanning-tree vlan b cost 1
D. switch2(config)# int G1/0/2switch2(config-if)# spanning-tree vlan b cost 19
E. switch2(config)# int G1/0/1switch2(config-if)# spanning-tree vlan c port-priority 64
F. switch2(config)# int G1/0/1switch2(config-if)# spanning-tree vlan c port-priority 128

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