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You really don't need to solve this problem. You can answer it as D without even looking at the statements. Simplify the equation like this: \(6(x-1) = y\) From this equation we know that y must be even. So \(xy\) must be even, no matter what the value of x is going to be. Also remember that 0 is considered as even number, so you can simply conclude that \(xy\) is even.