Finish the following sentence with the best choice: If you smell natural gas while baking in a gas oven,

Choices:
- turn off oven immediately.  Do not use any small appliances.  Open a window and evacuate the house immediately. Contact emergency services using a neighbor's phone or your cell phone outside.
- turn off oven immediately.  Do not use any electrical appliances.  Open a window and evacuate the house immediately. Contact emergency services using a neighbor's phone or your cell phone outside.

Answer:
turn off oven immediately.  Do not use any electrical appliances.  Open a window and evacuate the house immediately. Contact emergency services using a neighbor's phone or your cell phone outside.