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).

Paragraph: Shorter wavelengths (higher frequencies) correspond to higher energies and thus hotter star temperatures.
 Question: Sue sees a star with a high frequency. Erin sees a star with a low frequency. The hotter star belongs to 
 Choices: A)Sue 
B)Erin
Sue

Paragraph: To reduce friction, oil is added to the engine.
 Question: Jeff should add _____ to his engine to decrease the friction in its processes. 
 Choices: A)oil 
B)gas
gas

Paragraph: The longer the resistor, the more resistance it has.
 Question: Terry adds a shorter resistor to the circuit. The resistor offer _____ than the other one. 
 Choices: A)more 
B)less
less