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: backwash connector
Product list:
A: ARU Replacement Hose Adapter w/Collar Replace for Intex Fit for Threaded Connection Pumps (Pair)
B: 1.5" x 50' Blue PVC Backwash Hose for Swimming Pools, Heavy Duty Discharge Hose Reinforced Pool Drain Hose with Aluminum Pin Lug Fittings
Answer: B,A