Be careful with the terminology here. (Had an extensive thread on this a few months back.) A/B/C mean left/center/right, with B always being in the center. (Depending on which concourse, A can be either left or right, though.) And 1/2/3 mean top/middle/bottom row.
I'm an exceptional case, as my preference is for A1 or C1, provided that I'm in the seat closest to the B section. That one takes a bit of work and explanation to CMs, because you have to know whether it means being the first one in the line or the last while waiting on the chevrons in the pre-show waiting area.
Thank you for that clarification.....it's as clear as mud now!!! No I really mean it...you cleared things up for me