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: s9 case otterbox
Product list:
A: Lanhiem Samsung Galaxy S9 Case, IP68 Waterproof Dustproof Shockproof Case with Built-in Screen Protector, Full Body Sealed Underwater Protective Clear Cover for Samsung S9 (Black)
B: OTTERBOX DEFENDER SERIES Case for Samsung Galaxy S9 - Frustration FREe Packaging - BLACK
Answer: B,A