<human>: Goal: remove water rings on wood

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

OPTIONS:
- use an Xacto knife and scrape the ring away, then color in with the same color of crayon.
- place a towel over them, and press with a warm iron for 10 seconds.
<bot>: place a towel over them, and press with a warm iron for 10 seconds.