Instruction: Evaluate the relevance of each product title in the input to the given query, and then sort the products in descending order of relevance, placing the most relevant product at the top of the ranked list.

Input:
Query: pool heater
Product list:
A: Hayward W3H150FDN Universal H-Series 150,000 BTU Natural Gas Pool and Spa Heater for In-Ground Pools and Spas
B: ANDRIMAX Immersion Heater for Boiling Bath Water, Heavy Duty Submersible Water Heater with Metal Guard Cover to Heat 5 Gallons of Water in Minutes - U.S. Version(FULLY IMMERSED WHILE USING)
Answer: A,B