Task: Query_Product_Rank
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: chain for mountain bike
Product list:
A: KMC X11 , Silver/Black 118 Link 11 Speed Chain
B: Oumers Universal Bike Chain Tool with Chain Hook, Road and Mountain Bicycle Chain Repair Tool, Bike Chain Splitter Cutter Breaker, Bicycle Remove and Install Chain Breaker Spliter Chain Tool
Answer: A,B