Question ID:PT58 S3 Q16 Passage:Flyhigh Airlines owns exactly two planes:  P and Q.  Getaway Airlines owns exactly three planes:  R, S, T.  On Sunday, each plane makes exactly one flight, according to the following conditions:Only one plane departs at a time.Each plane makes either a domestic or an international flight, but not both.Plane P makes an international flight.Planes Q and R make domestic flights.All international flights depart before any domestic flight.Any Getaway domestic flight departs before Flyhigh's domestic flight. Stem:Which one of the following must be true? Correct Answer Choice:BChoice A:Plane P departs first. Choice B:Plane Q departs last. Choice C:Plane R departs second. Choice D:Plane S departs first. Choice E:Plane T departs fourth.