Which conference resource is conference 2 using assuming the MRGL has just been reset and all six conferences have become activr?

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Cisco 642-447 Exam
Refer to the exhibit. Which conference resource is conference 2 using assuming the MRGL has just been reset and all six conferences have become activr?

A.
HW_CFB_1

B.
HW_CFB_2

C.
SW_CFB_1

D.
SW_CFB_2

E.
SW CFB 3

Explanation: