Finish the following sentence with the best choice: How do I add the butter to the biscuit crumbs when making chocolate nutella tart?

Choices:
- Add in melted butter and process in the sifter until the butter is well incorporated and the crumbs look like wet sand.
- Add in melted butter and process in the food processor until the butter is well incorporated and the crumbs look like wet sand.

Answer:
Add in melted butter and process in the food processor until the butter is well incorporated and the crumbs look like wet sand.