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).

[EX Q]: Paragraph: Because richer nations use more fossil fuels, they also cause more air pollution and global warming than poorer nations do.
 Question: If Jim's country increases use of fossil fuels, what will happen to the amount of pollution it produces? 
 Choices: A)increase 
B)decrease
[EX A]: increase

[EX Q]: Paragraph: For a given medium, sound has a slower speed at lower temperatures.
 Question: When animals are moving in the cold they are 
 Choices: A)faster 
B)slower
[EX A]: slower

[EX Q]: Paragraph: Therefore, increasing the surface area of solid reactants increases the reaction rate.
 Question: If Mona is creating a reaction using solid reactants and she decreases the surface area of those reactants, what happens to the reaction rate? 
 Choices: A)increases 
B)decreases
[EX A]:
decreases