<human>: Objective: To remove pilling on sweaters.

Which of the following solutions is more sound in terms of naive physics reasoning?

OPTIONS:
- Remove unsightly pilling from your sweaters or linens by rubbing them with the textured side of a grater.
- Remove unsightly pilling from your sweaters or linens by rubbing them with the textured side of a sponge.
<bot>: Remove unsightly pilling from your sweaters or linens by rubbing them with the textured side of a sponge.