State tax filing

I have to choose from a option on this form 1 2 or 3 and I live in Georgia! It doesn't ask for a precentage just wants me to choose a b or c on the locality page before I can move on...

a is Dekalb County (excluding Atlanta)

b is Any other locality that imposes a local sales tax

c is Not applicable

Which one do I choose and this is the only options to chose from................