Two kinds of people... (Do-over)

Ok, so, you have a power drill plugged into an extension cord, which is plugged into the wall socket, right? You need to add another extenstion cord cos just one isn't long enough.

Do you add it
(a) at the wall, between the power point and the extension cord, or
(b) between the extension cord and the drill?

A quandry, but maybe a very important psychological indicator.