If it is a 4×100 meters relay, and if each of the four runners run 100 meters each, the fastest combination is:
Go from answer options. In choice (3) - Ajith, Chandran, Dinu and Easwar will take 11 + 11 + 10.5 + 11 = 43.5seconds which will be lowest amongst the four combination given. Note, for each of the four this is their first100m.