Please choose the correct solution to the question: How to bake a cake.

Solution1: Preheat the oven to 325 °F and grease and flour a cake pan. Place the butter and sugar in a mixing bowl and beat them together until the mixture is light. Add the eggs and vanilla. Stir in the cake flour. Keep the electric mixer on low or use a wooden spoon to stir the flour in a bit at a time until it's just incorporated. Pour the batter into the pan. Bake the cake for 2 hours 15 minutes.

Solution2: Preheat the oven to 325 °F and grease and flour a cake pan. Place the butter and sugar in a mixing bowl and beat them together until the mixture is light. Add the eggs and vanilla. Stir in the cake flour. Keep the electric mixer on low or use a wooden spoon to stir the flour in a bit at a time until it's just incorporated. Pour the batter into the pan. Bake the cake for 1 hour 15 minutes.

Answer format: solution1/solution2
Answer: solution2