Ans: D
$\begin{array}{cl}
& (x-2y)(x+2y-2) \\
= & x^2 +2xy-2x -2xy -4y^2 +4y \\
= & x^2 -4y^2 -2x + 4y
\end{array}$
$\begin{array}{cl}
& (x-2y)(x+2y-2) \\
= & x^2 +2xy-2x -2xy -4y^2 +4y \\
= & x^2 -4y^2 -2x + 4y
\end{array}$
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