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: 8 gb usb thumb drives with physical write protect switch
Product list:
A: Kanguru ALK-FB30-8G 8GB FLASHBLU30 Flash Drive USB 3.0 Physical Write Protect Switch
B: Kanguru ALK-FB30-16G 16GB FLASHBLU30 Flash Drive USB 3.0 Physical Write Protect Switch
Answer: A,B