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.
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Question: 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.

Answer: less powerful.


Question: Question: Increasing the mass of an object causes its inertia to 
 Option1: increase 
 Option2: decrease 
 Explanation: The full box is harder to move because it has greater mass and therefore greater inertia.

Answer: increase


Question: Question: Robin has an old computer that runs quickly, and Bryan has a weak new computer. When working on the same task, the computer that will finish the task first is 
 Option1: Robin's 
 Option2: Bryan's 
 Explanation: Compared with a less powerful device, a more powerful device can either do more work in the same time or do the same work in less time.

Answer:
Robin's