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: used spas for sale
Product list:
A: Intex 24ft X 12ft X 52in Ultra XTR Rectangular Pool Set with Sand Filter Pump, Ladder, Ground Cloth & Pool Cover
B: Signature Design by Ashley Chime 12" Medium Firm Memory Foam Mattress - CertiPUR-US Certified, Queen
Answer: A,B