There is a problem punching 'B' and that is the bottom two fingers have less muscle and ligament support in the hand. This means the bones in the hand have a greater chance of braking. This is a very common injury on Friday and Saturday nights in the emergency room. It hurts a lot having bones stick out from the bottom of your hand or so I've been tolled.
Don't get me wrong it works but if you make contact with a bad angel then fights over, you lose.
So in my opinion go 'C' or go Dillman.