Bolt was just as surprised as all of us about how fast he ran . Test Usain Bolt all you want . There wo n't be any illegal substances in his body . Not only do I believe he is clean , he has to be clean .
According to the above context, choose the best option to answer the following question.
Question: Why would some doubt Usain Bolt 's integrity ?
Options:
- He is so insanely good .
 - None of the above choices .
 - He was caught with substances that are illegal .
 - He was in possession of illegal drugs .


He is so insanely good .