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: primo fountain cool
Product list:
A: Myvision Water Bottle Pump 5 Gallon Water Bottle Dispenser USB Charging Automatic Drinking Water Pump Portable Electric Water Dispenser Water Bottle Switch (White)
B: Avalon Bottom Loading Water Cooler Water Dispenser with BioGuard- 3 Temperature Settings - Hot, Cold & Room Water, Durable Stainless Steel Construction, Anti-Microbial Coating- UL/Energy Star Approved
Answer: A,B