The correct option is B Gaurav
Raj finished before Mohit but behind Gaurav. So, the order is Gaurav, Raj, Mohit. Ashish finished before Sanchit but behind Mohit. So, the order is Mohit, Ashish, Sanchit. Thus, the order is : Gaurav, Raj, Mohit, Ashish, Sanchit. Clearly, Gaurav won the race.