Which sequence of transformations shows that figure b is similar to figure a?

a.

figure a was dilated by a scale factor of 1/2, with point n as the center of dilation, and then reflected across line m to form figure b.

b. figure a was rotated 90° clockwise about point n and then dilated by a scale factor of 2, with point n as the center of dilation, to form figure b.

c. figure a was dilated by a scale factor of 2, with point n as the center of dilation, and then rotated 90° counterclockwise about point n to form figure b.

d. figure a was reflected across line m and then dilated by a scale factor of 1/2, with point n as the center of dilation , to form figure b.