\({x^2} - {y^2} + 10x - 10y\)
A.\(\left( {x - y} \right)\left( {x + y + 10} \right)\).
B.\(\left( {x - y} \right)\left( {x - y + 10} \right)\).
C.\(\left( {x - y} \right)\left( {x + y - 10} \right)\).
D.\(\left( {x + y} \right)\left( {x + y - 10} \right)\).

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