Question ID:PT83 S4 Q16 Passage:The operator of a passenger railway system needs to close at least one of its stations. Six stations‚ L, M, N, P, Q, and R‚ are being considered for closure. The decision regarding which stations to close and which to keep open is subject to the following constraints:N and R cannot both close.If N stays open, then L must also stay open.If R stays open, then M must also stay open.L and R cannot both stay open. Stem:If exactly two of the stations stay open, which one of the following must close? Correct Answer Choice:DChoice A:L Choice B:M Choice C:N Choice D:Q Choice E:R