2. Scan the situation displayed above. AAL42 has experienced in-flight malfunction of Mode C capability [i.e. your radar won't receive any altitude information]. Select the solution with the least workload.

A. Vector A29161 behind AAL42.

B. Vector AAL42 behind A29161.

C. Climb AAL42 to FL330.

D. Descend A29161 to FL270.

Answer: D. They're too close (and too fast) to easily vector one behind the other, and climbing AAL42 to FL330 would mean having to miss both A29161 (Air Force 29161) and UAL625, so descending A29161 is the easiest solution.

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