Here's a problem to solve: A refrigerator uses electricity to create a cold place to store food. What negative impact does refrigerator use have on the environment?

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

- A: The electricity needed to keep food cold can be expensive.
 
- B: If the electricity goes out, the food will spoil and make you sick.
 
- C: Storing food longer reduces grocery store trips and gasoline use.
 
- D: Old refrigerators contain chemicals and take up space in landfills.
 