Instruction: Rank the products A, B, C, ... based on their relevance to the provided query, and produce a ranked list with the most relevant product positioned at the top of the list.

Input:
Query: spectracide backpack sprayer
Product list:
A: Cutter 61067 HG-61067 32Oz Rts Bug Free Spray, 1 pack, Silver Bottle
B: Chapin 61850 4-Gallon Spectracide Backpack Poly Sprayer For Weed Killers
C: Field King Max 190348 Backpack Sprayer for Professionals Applying Herbicides , White , 4 gallon
Answer: B,C,A