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: 0.9% sodium chloride without preservatives usp
Product list:
A: Elkay 98545C Kit - Bottle Filler Solenoid Valve Assembly
B: PuriLens Plus Preservative Free Saline 4 Fl Oz bottles, Pack of 12
Answer: B,A