<human>: Goal: To charge the battery of a smartphone,

Which of the following methods is more reasonable for accomplishing this goal?

OPTIONS:
- you should plug a USB cable in a power supply, plug the supply in an outlet, plug the cable into the wireless charging pad and lay the phone on it.
- you should plug a USB cable in a power supply, plug the supply in an extension cord, and plug the other end of the USB cable directly into the phone.
<bot>: you should plug a USB cable in a power supply, plug the supply in an outlet, plug the cable into the wireless charging pad and lay the phone on it.