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).

Example Input: Paragraph: Water becomes more dense when it is colder and when it has more salt.
 Question: What happens to water when it absorbs less salt? 
 Choices: A)lower density 
B)Higher Density
Example Output: lower density

Example Input: Paragraph: By using multiple stages, empty fuel containers could drop away. This reduced the mass of the rocket so that it could fly higher.
 Question: David is getting ready to fly into space on a rocket. As the rocket shoots upwards, part of the mass falls away, allowing the rocket to go 
 Choices: A)higher 
B)lower
Example Output: higher

Example Input: Paragraph: If we have two materials with the same volume, the material with a higher mass will be more dense.
 Question: Mike put two things into buckets of water. The first bucket got a rubber duck, and the second bucket got a bowling ball. The water was less displaced in the bucket with the rubber duck, because the mass was 
 Choices: A)larger 
B)smaller
Example Output:
smaller