A and B start simultaneously at one end of a swimming pool whose length is 50 m. The swimming race is a race of 1000 m. If A beats B and meets him 17 times during the course and A' speed is 5 m/s then the speed of B could be

a) 1 m/s b) 3 m/s  c) 4 m/s d) 6 m/s

@Srikanth Lingamneni