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: test blood sugar without pricking your finger
Product list:
A: Genteel Plus Painless Lancing Device | Blood Glucose and Ketone Testing | Vacuum Seal Technology & Ultra-Precise Depth Control for Painless Checking (Playful Purple)
B: AUVON DS-W Blood Sugar Test Kit (100 Test Strips, 100 30G Lancets), High-Tech Diabetes Blood Glucose Meter (No Coding Required) with Lancing Device
C: Zacurate 500BL Fingertip Pulse Oximeter Blood Oxygen Saturation Monitor with Batteries and Lanyard Included (Navy Blue)
D: Metene Fingertip Pulse Oximeter, Blood Oxygen Saturation Monitor with Alarming Beep, Metene Portable SpO2 Meter with Batteries and Lanyard
Answer: B,A,D,C