Please choose the correct solution to the question: How do I prepare the ramekins when making vanilla souffles?

Solution1: Butter the inside of 6 ramekins and use 1/4 cup of sugar to coat the inside of each one, making sure to cover all the exterior surface

Solution2: Butter the inside of 6 ramekins and use 1/4 cup of sugar to coat the inside of each one, making sure to cover all the interior surface

Answer format: solution1/solution2