<human>: Which of the following solutions is better for the following goal:
How to sand the edges of the wooden boards.

OPTIONS:
- Using sandpaper, go over the panels that are rough with the paper. Keep rubbing until the panels are smooth.
- Using sandpaper, go over the edges that are rough with the paper. Keep rubbing until the edges are smooth.
<bot>: Using sandpaper, go over the edges that are rough with the paper. Keep rubbing until the edges are smooth.