Auratog + Reality Acid

[neppy]

If I sacrifice reality acid to auratog's ability which resolves first the +2/+2 or the reality acid destruction trigger?

Auratog      
Card Type:    Creature - Atog
P/T:    1/2
Rules Text (Oracle):    Sacrifice an enchantment: Auratog gets +2/+2 until end of turn.

Reality Acid      
Card Type:    Enchantment - Aura
Rules Text (Oracle):    Enchant permanent
Vanishing 3 (This permanent comes into play with three time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)
When Reality Acid leaves play, enchanted permanent's controller sacrifices it.

[Clariax]

The reality acid trigger will resolve first.  Any time a triggered ability triggers during the playing of some spell or activated ability, the triggered ability always goes on the stack on top of the spell/activated ability.