12) In general regarding conviction, but specifically regarding the runewords malevolent and/or infinity

A) If you have malevolent on and your mercenary has infinity, they should stack correct?
B) Exactly how much (if any) levels on conviction is necessary to remove the following immunities:

I) Physical (seems at most a level 9 conviction aura should remove such)
II) Poison (also seems at most a level 9 or 12 conviction aura should remove such for most enemies/bosses)
III) Fire
IV) Cold
V) Lightning