Task: Query_Product_Rank
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: bts iphone xr cases
Product list:
A: N / A iPhone XR Case 6.1",Anti-Scratch Slim Fashion Custom Cover Cases for iPhone XR (BTS)
B: iPhone Xs Max Clear Case,Matte Shock-Absorption Bumper Edge Silicone TPU Soft Gel Phone Cover for Apple iPhone Xmax 6.5" (2018) - Clear Purple
Answer: A,B