which is equivalent to (-2m+5n)^2, and what type of special product is it
A- 4m^2+25n^2; a perfect square trinomial
B- 4m^2+25n^2; the difference of squares
C- 4m^2-20mn+25n^2; the difference of squares
D- 4m^2-20mn+25n^2; the difference of squares