Your Answer is

Correct Answer is E

Explanation

Translate the leftmost triangle AGF to the right to form a triangle CDF', so that the overall pattern forms a rectangle AFF'C. Observing the rectangles ABEF and BEF'C, we can see that the two rectangles have the same width and the ratio of length is 2:5, so the area ratio of the rectangle ABEF and the parallelogram ACDG is 2:7.