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: youth mx helmet small
Product list:
A: AHR H-VEN12 Youth Motocross Helmet Full Face Offroad Dirt Bike Helmet Motorcycle ATV Mountain Bike (X-Large, Pink)
B: O'Neal 0200-464 2SRS Youth Helmet Villian, Neon Yellow, L
Answer: B,A