Two times an unknown integer, multiplied by the unknown integer minus two times a different unknown integer, equals 50."

A) 2x2 + 4xy − 50 = 0
B) 2x2 − 4xy + 50 = 0
C) 2x2 + 4xy + 50 = 0
D) 2x2 − 4xy − 50 = 0

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