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: circ02 oxygen booster and circulation support
Product list:
A: Nitric Oxide Blood Flow-7 - Nitric Oxide Supplement with L Arginine and L Citrulline (90 Capsules) - Nitric Oxide Pills for Men & Women - Nitric Oxide Booster for Healthy Aging, Weight & Heart Health
B: HumanN SuperBeets - Black Cherry Beet Root Powder - Nitric Oxide & Vitamin C Boost for Blood Pressure, Circulation, & Immune Support - Non-GMO Superfood Supplement
C: Beet Root Powder Organic - Nitric Oxide Beets by Snap Supplements - Supports Lower Blood Pressure and Circulation Superfood, Muscle & Heart Health, Mixed Berry Flavor, 250g (30 Servings))
D: Zacurate Pro Series 500DL Fingertip Pulse Oximeter Blood Oxygen Saturation Monitor with Silicon Cover, Batteries and Lanyard (Mystic Purple)
Answer: C,A,D,B