How much mechanical force is required to lift a 300 pound compressor 3 feet?

How much mechanical force is required to lift a 300 pound compressor 3 feet?
 
  A) 300 pounds / 3 feet = 100 footpounds of force
  B) 300 pounds of force
  C) 300 pounds  3 feet = 900 footpounds of force
  D) Mechanical force alone will not lift the compressor.

 Q. 2

How does natural gas move through pipelines from the well head to the end user thousands of miles away?
 
  A) Natural gas moves through the pipelines due to the extreme pressure on natural gas underground.
  B) Solar energy is used to operate electric fans that help move the gas through the pipelines.
  C) Natural gas moves naturally through the pipes because it is lighter than air.
  D) Large compressor pumping stations move the gas through the pipelines under high pressure.