Importance of Teamwork!

A bunch of smart MBA students about to give their final paper just got drunk the previous night & did not study. Next day morning remorse filled them & they thought of a brilliant idea of fooling their dean to cover their absence. They painted their hands & dresses with oil & grease &, with disheveled hair, they burst in the examination hall where the paper was going on. They painted a sob story of how their car developed a flat tyre the previous night on a desolate road & how they didn't get any help & had to rough out back to the campus which they reached just a few minutes earlier. They pleaded for a re-exam after a few days. The dean said he was a reasonable man & he would give the re-exam after three days. The boys worked hard for the three days & went to the hall confidently. The dean explained that since this was an extraordinary request, the four students will give the examination from four different halls, the question paper being the same. The question paper was given to the four halls.It had 100 marks.The first question which had just 5 marks was simple. The second question which had 95 marks was:- "WHICH TYRE??"