<human>: Goal: When do I sand the car grille?

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

OPTIONS:
- Sand the part of the car grille you want to dip after you dip said part.
- Sand the part of the car grille you want to dip before you dip said part.
<bot>: Sand the part of the car grille you want to dip before you dip said part.