<human>: Objective: Prevent icing from drying.

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

OPTIONS:
- Place damp paper towel under glass cup and keep piping bag in cup when not using.
- Place damp paper towel under coffee mug and keep piping bag in cup when not using.
<bot>: Place damp paper towel under glass cup and keep piping bag in cup when not using.