Write the next sentence in this paragraph:

How to make chocolate chip ice cream sandwiches
Preheat the oven to 350 degrees and lightly butter several large baking sheets.
In a large bowl ,
Stir together the flour, baking powder, and salt in a large bowl.
In a separate bowl, stir the butter, sugars, oil, and corn syrup until combined.

Choose your answer from:
- Place a thick layer of the ice cream on one of the baking sheets. Line the bottom of each sheet with parchment paper.;
- Add the egg and vanilla extract until blended, and then the flour mixture. Stir in the chocolate chips and nuts, if desired.;
- You do not need to worry about stirring or whisking while you're creaming the ingredients. Whip 1 cup of butter and 1/4 cup of sugar in a stand mixer.;
- Grease and flour several 10 x 8 inch (22 x 30 cm) baking sheets. The baking sheets should be lightly greased to prevent sticking.;
Add the egg and vanilla extract until blended, and then the flour mixture. Stir in the chocolate chips and nuts, if desired.