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: iphone 10.
Product list:
A: Apple iPhone X, US Version, 64GB, Space Gray - Fully Unlocked (Renewed)
B: App Store & iTunes Gift Cards - Email Delivery
Answer: A,B