Please choose the correct solution to the question: Make sour cream

Solution1: To make sour cream, you just need buttermilk and heavy cream or half and half. Heavy cream will result in a thicker sour cream, so choose based on the texture you're looking for. Add 2 to 3 tablespoons of buttermilk per cup of heavy cream or half and half and let it sit at room temperature for 1 to 2 days

Solution2: To make sour cream, you just need buttermilk and heavy cream or half and half. Heavy cream will result in a thicker sour cream, so choose based on the texture you're looking for. Add 2 to 3 cups of warm of buttermilk per cup of heavy cream or half and half and let it sit at room temperature for 1 to 2 days

Answer format: solution1/solution2
Answer: solution1