Shahid and Rohit start from the same point in opposite directions. After each 1 km, Shahid always turns left and Rohit always turns right. Which of the following statements is correct ?
After both have travelled 2 km, the distance between them is 4 km.
They meet after each has travelled 3km.
They meet for the first time after each has travelled 4 km.
They go on without ever meeting again.