Which is better: B or C?

[dileonardoja]

You need to properly set up in B which means definitely not too deep. Some advocate stepping with the left foot toward the 45 then squaring to the base with the right foot and getting set to make the call. That works well on a pick-off that isn't really intended to get the runner out but only to hold him close. On the real quick moves you might still be moving when the play happens.

Seems like the emphasis today is just square up to the base with the right foot and get set. Initial positioning is critical. If you are too deep you will be straight-lined and be guessing. The Red Book talks to this specifically.