Do Elemental Resistances stack?

[Saldiven]

For example, if a character is a race that has an innate Resistance, say Acid Resistance 5, as an example. If they later take a class that grants the same Resistance (such as Draconic(Black) Bloodline Sorcerer at lvl 3), does it become Acid Resistance 10, or does it stay Acid Resistance 5? Does it stack or only take whichever is highest?

[Buri Reborn]

It doesn't stack. Take the highest one that applies.

[Saldiven]

Thanks. That's what I had assumed, but wanted to make sure.