MCQs

Once a sardar was sloving Biology paper MCQs and he was in Examination Hall.
Invegilator saw that sardar was tossing the coin again and again while attempting the paper.
He asked, hello Mr Saradr Gee, what's going on?
Sardar replied, I am ticking the options in the paper but before doing that I used to toss, if Tail, I tick "A' , and if Head, then "B". it's very simple.
Invegilator laughed at and left sardar with his job.
10 minutes before paper end time, the invegilator saw saradr was tossing the coin but this time more hurriedly and quickly.
He asked, Saradr Gee, what are you doing now, I think you have finished your paper.
Sardar replied, I am doing verification of my answers.