Finish the following sentence with the best choice: How do you inflate your bike tires?

Choices:
- You can open the bike tire nozzle, put it in your mouth and blow air in until the tire is hard.
- You can plug a bike pump into the nozzle of the bike tire and pump air in until the tire is hard.

Answer:
You can plug a bike pump into the nozzle of the bike tire and pump air in until the tire is hard.