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

How to make cornflake cookies
Preheat the oven to 190c/350f.
Prepare two baking trays (sheets) by lining with baking (parchment) paper or a silicone baking sheet.
Place the butter, sugar and vanilla into a large mixing bowl.
Beat until a soft, creamy and light mixture forms.

Select from the following.
* Add the flour, sugar and baking powder. Beating these together it will probably take a bit awhile.;
* Add the flour and place it into the mixer 1 cup at a time until smooth. Beat for 15 to 30 seconds more.;
* Beat in the eggs one at a time. Continue beating until the ingredients are well combined.;
* You can also use margarine, coconut oil or non-fat cooking milk as preferred. Transfer the dough to the prepared trays.;
Beat in the eggs one at a time. Continue beating until the ingredients are well combined.