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: wireless backup camera kit
Product list:
A: Bolayu 1/4" CCD Flush Mount Waterproof Truck Car Reverse Backup Rear View Camera
B: Backup Camera, Graysky Rear View Camera Waterproof High Definition Color 170 Wide Viewing Angle Parking Reverse Back Up Camera Waterproof CMOS(Monitor Not Included) (Black)
Answer: B,A