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: spectra s2 battery pack
Product list:
A: IBERLS 12V AC Adapter Power Cord Charger for Spectra Electric Breast Pump S1 / S2 / SPS100 / SPS200 / 9 Plus Charging Cord, 10FT
B: Spectra - S1 Plus Electric Breast Milk Pump for Baby Feeding
Answer: A,B