How does the administrator set up Switch 1 to help to achieve this goal?

Refer to the exhibit.

The switches in the exhibit are using SPBM. An administrator wants to send CustomerA traffic directly over the new link, shown by the dotted line in the exhibit, as a premium service for that customer. The existing links will be used for backup. The new link is reserved for CustomerA traffic.

How does the administrator set up Switch 1 to help to achieve this goal?
A . by assigning the CustomerA interfaces and the specific links in the path to the same S-VLAN ID
B . by creating a PW connection between Switch 1 and Switch 3, and mapping the CustomerA service instance to that PW
C . by setting up a new B-VLAN and assigning it to the new link and the backup links, and mapping the CustomerA I-SID to that B-VLAN
D . by changing the CustomerA I-SID 255 and defining the interface for the reserved link as the priority path in I-SID 255

Answer: C