Mostly , though , I was trying to distract you from thinking about work . " " Valiant effort , but quite a task to take on . The last time I did n't think about work at all was ... " He paused , bringing a finer to his chin to tap it in mock thought . " Three weeks ago . "
According to the above context, choose the best option to answer the following question.
Question: Why was he tapping his chin in mock thought at the statement ?
Options:
- It was a humorous way of replying that it is nearly impossible for him to forgo contemplating about his job .
 - He was showing the person that it is necessary for him to tap his chin when he is in deep consideration about work .
 - He was using his finger on his chin to count the weeks it had been since he had n't thought about work .
 - None of the above choices .


It was a humorous way of replying that it is nearly impossible for him to forgo contemplating about his job .