Please choose the correct solution to the question: Use strawberries and baking soda to whiten teeth

Solution1: A paste made from mushed up strawberries and instant yeast helps to clear away surface stains and remove plaque. Simply brush the paste onto your teeth with a toothbrush for several minutes, then rinse away.

Solution2: A paste made from mushed up strawberries and baking soda helps to clear away surface stains and remove plaque. Simply brush the paste onto your teeth with a toothbrush for several minutes, then rinse away.

Answer format: solution1/solution2
Answer: solution2