Finish the following sentence with the best choice: How to turn off a smartphone

Choices:
- While the smartphone is on, hold the power button down for several seconds, until you are prompted with the power options. Choose the option to turn the phone off.
- While the smartphone is on, briefly push the power button down, until you are prompted with the power options. Choose the option to turn the phone off.

Answer:
While the smartphone is on, hold the power button down for several seconds, until you are prompted with the power options. Choose the option to turn the phone off.