Instruction: Analyze the query and each product title. Sort the products in descending order based on their relevance to the query. The most relevant product should be at the top of the list, and output the ranked list.

Input:
Query: 4 inch pvc pipe
Product list:
A: Charlotte Pipe 4" X 2' Foam Core Pipe Fitting - Schedule 40 PVC DWV (Drain, Waste and Vent) Durable, Easy to Install, High Tensile and Sound Deadening for Home or Industrial Use (Single Unit)
B: Supply Giant 6I49 Flexible PVC Coupling with Stainless Steel Clamps, 4 inch, Black
Answer: A,B