Suppose How to bake a chocolate cake from scratch<br>Preheat the oven to 350°F. Grease and flour a 9x9 inch pan. In a mixing bowl, combine flour, sugar, cocoa powder, baking powder, baking soda, and salt. Add eggs, milk, oil, and vanilla extract. Mix until smooth. Pour batter into prepared pan and bake for 30-35 minutes.
Can we infer that "You should preheat the oven after mixing the batter."? Yes, no, or maybe?