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: mountaintop whitlow
Product list:
A: Mountain Top by Whitlow, Robert(July 1, 2007) Paperback
B: MOUNTAINTOP 60L Hiking Backpack with Rain Cover
Answer: A,B