<human>: Objective: How to melt marshmallows in microwave

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

OPTIONS:
- Place the marshmallows in a large microwave-safe bowl. Turn on the microwave, set to high, for 3 seconds. Take the bowl out of the microwave and stir the marshmallows.
- Place the marshmallows in a large microwave-safe bowl. Turn on the microwave, set to high, for 30 seconds. Take the bowl out of the microwave and stir the marshmallows.
<bot>: Place the marshmallows in a large microwave-safe bowl. Turn on the microwave, set to high, for 30 seconds. Take the bowl out of the microwave and stir the marshmallows.