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: ring security system 10 piece kit
Product list:
A: Ring Retrofit Alarm Kit - existing wired security system and Ring Alarm required, professional installation recommended
B: Thustar Home Alarm System Wirelss GSM Security System Kit Remote Control Intelligent LED Display Voice Prompt House Office Business Burglar Alarm Auto Dial 120DB Siren
Answer: B,A