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: chromecast
Product list:
A: Behind the Scenes
B: Apple TV (32GB, 4th Generation)
C: Ematic 4K Ultra HD Android TV Box with Built-in Chromecast + Netflix, Model:AGT419
Answer: C,B,A