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: Consider Input: Paragraph: The more dense the medium, the slower the light moves.
 Question: A very rarefied medium will cause light to move 
 Choices: A)faster 
B)slower

Output: faster


Input: Consider Input: Paragraph: In erosion, the higher the elevation, the farther the stream is from where it will reach base level and the more cutting it has to do.
 Question: A stream going down a mountain will have to do _____ cutting. 
 Choices: A)much 
B)little

Output: much


Input: Consider Input: Paragraph: A stronger acid produces a greater concentration of ions than a weaker acid.
 Question: If an acid is strong, it's concentration of ions will be 
 Choices: A)increased 
B)decreased.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Output: increased


