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.

Q: Question: A chemist compared two substances in the lab. Which substance will have a higher concentration of hydrogen ions? 
 Option1: the substance with the higher pH 
 Option2: the substance with the lower pH 
 Explanation: The lower the pH value is, the greater is the concentration of hydrogen ions and the stronger the acid.

A: the substance with the lower pH
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Q: Question: Tommy traded in his four-cylinder Pinto for an eight-cylinder Mustang. The Pinto engine was 
 Option1: more powerful 
 Option2: less powerful. 
 Explanation: The more cylinders a car engine has, the more powerful its engine can be.

A: less powerful.
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Q: Question: If Mona is heating up a pan on the stove to cook dinner with and she increases the amount of energy coming out of the stove, what will happen to the pan on the stove? 
 Option1: gets hotter 
 Option2: gets cooler 
 Explanation: The temperature of matter increases with the added energy.

A:
gets hotter
****