Definition: You are given a short paragraph, a question and two choices to answer from. Choose the correct answer based on the paragraph and write the answer(not the key).
Input: Paragraph: Plug-in hybrids run for a longer time on electricity and so are less polluting than regular hybrids.
 Question: Would a diesel powered submarine release more pollution if it were running on 
 Choices: A)its diesel engine 
B)its battery backup power?
Output:
its diesel engine