A/B/C/D: Which option is mostly correct in GATE Aerospace?

This is probably the fancy of every mind on this earth. Which option is correct most number of times? A or B or C or D.

Below is the pattern of GATE Aerospace answers from 2007 to 2013. Look for yourself, which option would fetch you good marks. ('x' represents numerical type answers or questions where marks were given to all).

A/B/C/D Graph for 2007-13

Please Note: This analysis has been done to satisfy a curious mind. This must, however, not be used as a GATE Aerospace preparation tool.

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