Your interview was quite funny but still i would say,
You responses were quick and i am still laughing.
It happens almost in all the interviews i guess; I would like to be suggested.
What in your opinion a person should do when he hasn't got knowledge to speak about a question asked by interviewer.
Saying Sorry here justifies? Though it shows our weaknesses and lesser knowledge.
And the 2nd option is to say "Anything".
Though most of people think it shows the confidence but still, it seems dunce of a person who is asked about A and he gives out a speech about Z.

Regards,

__________________
Past is like pieces of a broken mirror,
Try to pick them up,
and you only end up cutting yourself.