<human>: Goal: To have a magnetic clamp stick together with your magnet,

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

OPTIONS:
- make sure that the magnetic base and the magnet you are using touch with same polarity.
- make sure that the magnetic base and the magnet you are using touch with opposite polarity.
<bot>: make sure that the magnetic base and the magnet you are using touch with opposite polarity.