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A. `{:(P,Q,R,S),(3,4,1,2):}`
B. `{:(P,Q,R,S),(2,4,1,3):}`
C. `{:(P,Q,R,S),(4,3,1,2):}`
D. `{:(P,Q,R,S),(2,3,1,4):}`
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Correct Answer - A
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