You are given a question or fill-in-the-blank question, two answer options (Option1 and Option2) and an Explanation. Your task is to find the correct answer (return the string of the correct option, not option1/2) for the given question from the given options and using explanation.

[EX Q]: Question: Fred has an isotope that decays quickly. What is likely true about it? 
 Option1: it can be used to date older specimens 
 Option2: it can't be used to date old specimens 
 Explanation: Because these isotopes decay more slowly, they can be used to date much older specimens.
[EX A]: it can't be used to date old specimens

[EX Q]: Question: What would happen to the reduce of Jim's parallel circuit if he added fewer resistors to it? 
 Option1: increased resistance 
 Option2: decreased resistance 
 Explanation: In a parallel circuit, the resistance decreases as more resistors are added in parallel.
[EX A]: increased resistance

[EX Q]: Question: Erin is trying to get her solution to have a pH as far from zero as possible. The best way for Erin to do that is to have the acidity of the solution 
 Option1: decrease 
 Option2: increase 
 Explanation: The more acidic a solution is, the closer its pH value will be to 0
[EX A]:
decrease