Please choose the correct solution to the question: To layer pancake and the brownie batter for the pancake brownie

Solution1: Add layer of brownie-batter to the bottom of a greased 9x13 pan, then adding a layer of pancake rolls and then to finish it again a layer of brownie-batter.

Solution2: Add layer of brownie-batter to the top of a ungreased 9x13 pan, then adding a layer of pancake rolls and then to finish it again a layer of brownie-batter.

Answer format: solution1/solution2
Answer: solution1