Instruction: Given a query and a list of products denoted as A, B, C, ... with their titles, rank the products according to their relevance to the query. Output only a ranked list in which the most relevant product is at the top of the list.

Input:
Query: 400w power inverter
Product list:
A: Cobra CPI490 Portable Power Inverter - 400 Watt Car Charger, 2 Grounded AC Outlets, 12 Volt 2.4 Amp USB Port, Survival Gear, Camping Accessories, Travel Essentials
B: MoKo Power Inverter 1000 Watt Continuous/2000 Watt Peak, DC 12V to 110V AC Car Power Inverter with 3 AC Outlets,LED Indicator,Built-in Cooling Fan,4 Fuses(30A) - Black
Answer: A,B