Here's a problem to solve: New engine technology has helped cars get more mileage per gallon of gas. Since gasoline comes from oil, this technology will affect the world supply of oil by

Among the 4 following options, which is the correct answer?

- A: increasing the need to search for more oil.
 
- B: reducing the time it takes for oil to be renewed.
 
- C: decreasing the amount of oil that exists underground.
 
- D: extending the time that oil will be available for people to use.
 