Oopsie!

We had a course in Microeconomics in the first term at XLRI. In the next term I met the Prof. on the road and wished him a good day. He stopped and this is how the short conversation went:

Prof.: ahhh, ummm, B?

Me: No sir, (with a smug smile), A+

Prof.: Oh no, I meant the section.

Me: (oh shit) ah, yes sir, B.

:-(