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: ac units for rooms without windows
Product list:
A: OLMO 18000 BTU Window Air Conditioner 11.8 CEER 208-230V with Remote Controller and Window Frame
B: Ivation 8,500 BTU Portable Air Conditioner with Wi-Fi for Rooms Up to 250 Sq Ft (5,500 BTU SACC) 3-in-1 Smart App Control Cooling System, Dehumidifier and Fan with Remote, Exhaust Hose & Window Kit
Answer: B,A