Answer:
Option a. "José, Huang, Sam" is the order in which the boys finished the race.
Explanation:
It is stated that José did not come in second, but that he was also 2 seconds faster than that of the oldest boy in the race. Although we do not know who is the oldest boy in the race, the fact that José was faster than him, and that he neither finished second, gives no other option than him finishing first. In addition it is stated that Huang did not come in third, therefore if José came in first, and Huang did not come in third, the only possible finish position is José first, Huang second, and Sam third.