Instruction: Evaluate each product title in the given list, assess its relevance to the given query, and then arrange the products in descending order of relevance, with the most relevant product at the top of the ranked list.

Input:
Query: charcoal pet filter
Product list:
A: iPettie Replacement Filters for Tritone & Fiumi Ceramic Pet Water Fountain, 8PCS Carbon Filters and 2PCS Foam Filters
B: Filters for Aqua Fountain Aqua Cube, Aqua Fountain Aqua Falls and PetSafe Current Pet Fountains, Pack of 12
Answer: B,A