Instruction: Evaluate the relevance of each product title in the input to the given query, and then sort the products in descending order of relevance, placing the most relevant product at the top of the ranked list.

Input:
Query: virgin mobile flip phone
Product list:
A: Kyocera Kona Black - Carrier Locked to Virgin Mobile
B: Alcatel OneTouch Retro Brown and Black (Only Compatible with Sprint Prepaid)
Answer: B,A