Multi-choice problem: Continue writing the next sentence in this paragraph:

How to make a fast and easy microwave chocolate cake
Add flour, sugar, and cocoa to the mug and mix.
Stir in the egg.
The batter may be pasty at this point.

OPTIONS: - Slowly stir in the milk and oil. After incorporated, add in the chocolate chips and vanilla.. - Use a rubber spatula to gently pour the batter into the mug, about a quarter inch at a time, to ensure that everything blends. Pour your cake mix into the mug.. - Pour in the milk, flour, and cocoa. Do not over stir! Microwave about 45 seconds and then pour in the milk, cocoa, and sugar.. - Pour the batter in the microwave and leave it at 70% power for about two minutes. Run the microwave for about five minutes..
Slowly stir in the milk and oil. After incorporated, add in the chocolate chips and vanilla.