Because the ticking time interval of the ticking timer is equal, the smaller the distance between points, the smaller the speed of the object.

As can be seen from the figure, if the distance between the points on the paper belt of A is small, the speed of A is small. According to the s-t image, the speed of image B is small, so the paper tape of A corresponds to B;

The distance between dots on paper tape B is large, and the speed of paper tape B is high, so the speed of image A is high from the image, so paper tape B corresponds to A. 。

From the two paper tapes A and B, we can see that the points on them are equal and the time interval of the points is equal, so the movement time of the two paper tapes A and B is equal.

So choose B.