Has to be "A" for me.  Those wedges.... those lovely wedges!  

"B" is more frustrating for me. Especially, after leaving the birdie putt short.

But I usually feel better after a meeting with Dr Cold One at the clubhouse bar.

Easy, option A is the most frustrating.  That missed wedge is hopefully no worse than a par, but for most of us, I bet it's a chip and two putts more than 50% of the time, leading to bogey or an unthinkable double bogey should something happen while chipping (miserable lie, bunker, etc).  Option B is a tap in par and I would happily take 18 of those a round.

Its B for me, while Id like to make those birdie puts, Ill settle for par if given the opportunity... 

A) Because the wedge game gets me wins and I almost never leave those types of putts short.   The rounds where i've lost tournaments, the wedge game falls apart.  Usually distance issues where i hit them a bit hot.  That kinda crap keeps me up at night.  Makes you want to snap them but then again, I know not enough pre-round practice with wedges.