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: Its harder to overcome friction between heavier objects and the floor than it is between lighter objects and the floor.
 Question: If you were trying to push a box and wanted the one with the most friction which would you push? 
 Choices: A)light box 
B)Heavy box
Heavy box

Paragraph: Longer wires have more resistance than shorter wires.
 Question: If a wire were to be doubled in length, it would have _____ resistance than the original length wire. 
 Choices: A)more 
B)less
more

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