Based on the following 2950 switch configurations, which statement is correct?

no wrr-queue cos-map
wrr-queue bandwidth 20 10 70 1
wrr-queue cos-map 4 5
wrr-queue cos-map 1 0 1 2 3
wrr-queue cos-map 3 6 7

A.
Queue 1 is setup as the expedite queue.

B.
Queue 2 is setup as the expedite queue.

C.
Queue 3 is setup as the expedite queue.

D.
Queue 4 is setup as the expedite queue.

E.
No queue is setup as the expedite queue.

Explanation:

To allocate bandwidth between standard transmit queue 1 (low priority) and standard transmit queue 2 (high priority), use the wrr-queue bandwidth command. Use the no form of this command to return to the default settings.

wrr-queue bandwidth weight-1 weight-2 [ weight-3 ]
no wrr-queue bandwidth