Finish the following sentence with the best choice: How to quickly melt chocolate?

Choices:
- use chocolate slabs and place them under a double boiler, as the chocolate starts to melt, add a little water and stir
- use chocolate nibs and place them over a double boiler, as the chocolate starts to melt, add a little milk and stir

Answer:
use chocolate nibs and place them over a double boiler, as the chocolate starts to melt, add a little milk and stir