Instruction: Evaluate the relevance of each product title in the input to the given query, and then sort the products in descending order of relevance, placing the most relevant product at the top of the ranked list.

Input:
Query: spectracide backpack sprayer
Product list:
A: Chapin 61850 4-Gallon Spectracide Backpack Poly Sprayer For Weed Killers
B: Spectracide Weed & Grass Killer With Extended Control Concentrate, 40-Ounce
C: Cutter 61067 HG-61067 32Oz Rts Bug Free Spray, 1 pack, Silver Bottle
Answer: A,B,C