My understanding is that A and B are the wealthy and middle class, decidedly not what is traditionally called working class.
It is amazing the lengths to which some of you are prepared to go to pretend Corbyn is not a disaster.
Incidentally, the Conservatives are now projected to gain Copeland from Labour in the by-election next week. This is a seat that has voted Labour in every election since the 1930s. But of course this will be the fault of the Blairites.