Instruction: Rank the products A, B, C, ... based on their relevance to the provided query, and produce a ranked list with the most relevant product positioned at the top of the list.

Input:
Query: hair color shampoo for gray hair
Product list:
A: Cutelove Black Hair Dye - Dexe Black Hair Shampoo Hair Color for Gray Hair Coverage only 5 Minutes Maintain Hair Color a Months for Men and Women 25mlx10 Packs
B: Ownest Natural Darkening Shampoo for Reverse Gray & White Hair, Sulfate Free Volumizing Moisturizing, Organic Hair Darkening Shampoo Bar for All Hair Types-200ML
Answer: B,A