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: camco refrigerator covers rv
Product list:
A: Camco 40431 RV White Roof Vent Cover
B: Camco 09213 Camloc Steel Fastener - 2 Pack
Answer: A,B