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The line \( P Q \) whose equation is \( x-y=2 \) cuts the \( \mathrm{x} \)-axis at \( P \), and \( Q \) is \( (4,2) \). The line \( P Q \) is rotated about \( P \) through \( 45^{\circ} \) in the anticlockwise direction. The equation of the line \( P Q \) in the new position is
(A) \( y=-\sqrt{2} \)
(B) \( y=2 \)
(C) \( x=2 \)
(D) \( x=-2 \)
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