Anu and Prem started running simultaneously from diametrically opposite points on a circular track.
They ran in opposite directions and met after 12 minutes for the first time. If the distance between
them exactly ‘t’ minutes after they start is equal to a quarter of the length of the track, which of the
following is not a possible value of ‘t’?

1) 42
2) 78
3) 90
4) 144