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: flowtron bug zapper bulb
Product list:
A: Flowtron BK-80D 80-Watt Electronic Insect Killer, 1-1/2 Acre Coverage , Black
B: Flowtron BF-150 Replacement Bulb for BK-80D, FC7600 and Wall Sconce Models
Answer: B,A