Finish the following sentence with the best choice: how to use a pan?

Choices:
- place a clean pan on the burner of your stove and, after turning on the stove, heat up food or drink in it
- place a clean pan on the burner of your stove and, before turning on the stove, heat up food or drink in it

Answer:
place a clean pan on the burner of your stove and, after turning on the stove, heat up food or drink in it