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: By using multiple stages, empty fuel containers could drop away. This reduced the mass of the rocket so that it could fly higher.
 Question: Ray was traveling in rocket leaving orbit. He ejects the empty fuel containers so the ship can fly 
 Choices: A)higher 
B)lower
[EX A]: higher

[EX Q]: Paragraph: Gluons make quarks attract each other more strongly the farther apart the quarks get.
 Question: When there are high levels of gluons in quarks it becomes 
 Choices: A)weaker 
B)stronger
[EX A]: stronger

[EX Q]: Paragraph: The higher the pH value is, the stronger the base.
 Question: Ulysses has a solution with a pH of 10. Reilly has a solution with a pH of 14. Who has a stronger base? 
 Choices: A)Ulysses 
B)Reilly
[EX A]:
Reilly