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: Many of the worlds people live with water scarcity, and that percentage will increase as populations increase and climate changes.
 Question: John's town used to have lots of water, back when there were only a few hundred people. However, now that the town holds several thousand people, the water availability is 
 Choices: A)scarce 
B)plentiful
Example output: scarce
Example explanation: Based on the information given in the paragraph, population growth will make water more scarce, so that is the correct answer.
Q: Paragraph: If we have two materials with the same volume, the material with a higher mass will be more dense.
 Question: Tanya has a substance with mass 10kg. Logan has a substance with mass 5kg. If both substances are the same size, who has the less dense substance. 
 Choices: A)Tanya 
B)Logan
A:
Logan