option A is jusy
gambling, option B is better, but it depends of structure of the game, however freerolls use to be fast with low starting stacks is hard to keep your blinds over 10bb when you are below you need to play agressive taking the option of shoving hands than normally you don't takeit riskly like A10,AJ, KJ,77, 66.
but there are some freerolls that are not fast and you can play with more patience like full tilt sats, bakrollmob (full tilt only),WR2 sat (
pokerstars).
And finally something important, against fishes if you have a normal or better stacks pay their all-in only with 99+ DON'T DO IT with AQ or AK that are extremely riskly against them, play them only if your stack is low.