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: eargo hearing aids for seniors
Product list:
A: Neosonic Rechargeable Hearing Amplifier to Aid TV Watching, Wireless Neckband Headphones Pocket Talker for Seniors & Adults, Conversation Assist Device with Remote Microphone Noise Cancelling - NW10
B: iBstone Rechargeable Hearing Amplifier to Aid Adults Seniors Hearing, Mini Completely-in-Canal Hearing Aids, Comfortable Wearing with Masks and Glasses, Black, K18
C: [New] iBstone Rechargeable Hearing Amplifier to Aid Hearing, Completely-in-Canal (CIC) Mini Digital Hearing Devices for Seniors & Adults, Blue & Red, Pair
Answer: C,B,A