Context: Well last Friday when we had the quiz , he was about to collect them , and I realized I had an addition mistake in my Gauss - Jordan , which was why my checking of the matrices did n\'t come out correctly . I asked him if he could pick up mine last ( I was the first one that he picks up ) because I found a simple mistake . He just told me to put " mistake " there and he will overlook it . Well he did n\'t .
Question: Why was someone about to collect the quizzes ?
Option 0: None of the above choices .
Option 1: Because the quiz was over .
Option 2: Because I realized I had an addition mistake .
Option 3: Because my checking of the matrices did n't come out correctly .
Answer: 1