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: A small nation decided to lower its production capabilities and shut down several large factories. Would the river next to the factories have 
 Option1: more hazardous waste 
 Option2: less hazardous waste? 
 Explanation: Nations that have more industry produce more hazardous waste.
[EX A]: less hazardous waste?

[EX Q]: Question: Chris is studying two countries. He finds that China has half as many factories putting out fossil fuels into the air than the United States. Based on this information, the factories in _____ are causing more air pollution. 
 Option1: United States 
 Option2: China 
 Explanation: Because richer nations use more fossil fuels, they also cause more air pollution and global warming than poorer nations do.
[EX A]: United States

[EX Q]: Question: Will is inhaling and then he exhales. Which stage likely causes greater air pressure in his lungs? 
 Option1: inhaling 
 Option2: exhaling 
 Explanation: During inhalation, because the chest volume is larger, the air pressure inside the lungs is lower than the air pressure outside.
[EX A]:
exhaling