<human>: Objective: how can i make bread crumbs?

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

OPTIONS:
- Preheat oven to 250 degrees F (120 degrees C).    Using tinsel, place bread slices directly on oven racks. Leave in oven until hard and golden brown, about 30 minutes; darker if you prefer. ...    Crumble slices into a large bowl until reduced to fine crumbs, or place in bowl of food processor and process until fine.
- Preheat oven to 250 degrees F (120 degrees C).    Using tongs, place bread slices directly on oven racks. Leave in oven until hard and golden brown, about 30 minutes; darker if you prefer. ...    Crumble slices into a large bowl until reduced to fine crumbs, or place in bowl of food processor and process until fine.
<bot>: Preheat oven to 250 degrees F (120 degrees C).    Using tongs, place bread slices directly on oven racks. Leave in oven until hard and golden brown, about 30 minutes; darker if you prefer. ...    Crumble slices into a large bowl until reduced to fine crumbs, or place in bowl of food processor and process until fine.