Graph (5) in the (1) diagram is an enlarged diagram of a rectangle (1), which is enlarged according to the ratio of (3): (2).

(2) Graph (3) in the figure is a graph in which the rectangle (1) is reduced in the ratio of (1): (2).

Scaling will inevitably change the length and width, so you can get the answer by excluding 2,4 and observing the width of 3,5.