Instruction: Evaluate each product title in the given list, assess its relevance to the given query, and then arrange the products in descending order of relevance, with the most relevant product at the top of the ranked list.

Input:
Query: stair climbing wheelchair
Product list:
A: HOMCOM Aluminum Portable Skidproof PVC Carpeted Folding Wheelchair Ramp, 10'
B: Porto Mobility 2021 Ranger Weatherproof Super Lightweight Foldable Sturdy Dual Motorized Powerful Electric Wheelchair(Airplane Ready)
C: Sentire Med Deluxe Electric Wheelchair for Adults, 600 W Peak Power Motor - Ultra Lightweight Design Foldable, Compact and Portable - Ideal Motorized Mobility Solution for Travel and All Terrain Use
D: Featherweight Wheelchair 13.5 lbs. - World's Lightest Wheelchair
Answer: D,C,A,B