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: christmas bed backdrops for photography
Product list:
A: Funnytree 7X5ft Christmas Modern Kitchen Photography Backdrop Retro Wood Wall Cook Background Indoor Photobooth Decorations Photo Studio Newborn Baby Portrait Props
B: EMART 8.5 x 10 ft Photo Backdrop Stand , Adjustable Photography Muslin Background Support System Stand for Photo Video Studio
C: Allenjoy 7x5ft White Headboard Backdrop Wedding Kids Baby Shower Newborn Leaf Damask Pillow Indoor Bedroom Photography Background Decoration Photo Booth Studio Props
Answer: C,A,B