Instruction: Rank items in listed options based on the user's purchase history to determine the item that the user is most likely to purchase next. Output the item with the highest likelihood of being the next purchase.

Input:
1st: Onkyo TX-NR616 7.2- Channel Network A/V Receiver (Discontinued by Manufacturer). Electronics. Home Audio. Onkyo.
2nd: WD My Book Thunderbolt Duo 6TB External Dual Hard Drive Storage with RAID. Electronics. Computers & Accessories. Western Digital.

Options:
A: Fotodiox Pro All Metal Black Camera Hand Grip for Sony RX1 DSC-RX1 & RX1R Cyber-Shot Cameras w/ Battery Access. Electronics. Camera & Photo. Fotodiox.
B: Drago Gear Tracker Backpack, Seal Gray. Sports & Outdoors. Outdoor Recreation. Drago Gear.
C: Samsung Galaxy Tab 2 10.1" Screen Protector [2-Pack], iLLumiShield - Japanese Ultra Clear HD Film with Anti-Bubble and Anti-Fingerprint Shield. Electronics. Computers & Accessories. iLLumiShield.
D: Reolink IP PoE Security Camera 4 Megapixels Super HD 2560x1440 Audio Support Dome Outdoor Indoor IR Night Vision Motion Detection RLC-420. Electronics. Camera & Photo...
E: Black & Decker CO1200B Grand Openings II Extra-Tall Electric Can Opener, Black. Home & Kitchen. Kitchen & Dining. Black & Decker.
F: VHC Brands Elysee Pillow Case Set of 2, 21x30. Home & Kitchen. Bedding. VHC Brands.
G: 3 Panel Roze Fireplace Screen. Home & Kitchen. Heating, Cooling & Air Quality. Chloe Lighting.
H: Men’s Calf Compression Sleeves - CEP Running Calf Sleeves 2.0 for Performance. Sports & Outdoors. Sports & Fitness. CEP.
I: Doc's Skin Care Saddle Sore Ointment One Color, 1oz Tube. Sports & Outdoors. Outdoor Recreation. Doc's.
J: HME Products Better Crossbow Holder. Sports & Outdoors. Sports & Fitness. HME.
K: KitchenAid KNS256CDH Spiral Coated Dough Hook - Fits Bowl-Lift models KV25G and KP26M1X. Home & Kitchen. Kitchen & Dining. KitchenAid.
L: Coast Athletic Brands Aviat Restricted Flight Foam Golf Balls | Practice Golf Balls | Indoor Golf Balls.  Coast Athletic Brands.
M: Titleist NXT Tour S Yellow Golf Balls - 1 Dozen. Sports & Outdoors. Sports & Fitness. Titleist.
N: Dry & Dry [20 Packets] 30 gram Premium Quality Silica Gel Packets Desiccant Dehumidifier - Rechargeable Fabric. Home & Kitchen. Heating, Cooling & Air Quality...
O: Marksman Airgun Bolts, 12ct. Sports & Outdoors. Sports & Fitness. Marksman.
P: Lyman Electronic Digital Caliper. Sports & Outdoors. Sports & Fitness. Lyman.
Q: Lindy Riggers - Lindy Rigger Kit - 3 Per Box. Sports & Outdoors. Sports & Fitness. Lindy.
R: Pioneer Electronics USA Slim External Blu-Ray Writer (BDR-XU03). Electronics. Computers & Accessories. Pioneer.
S: BIRUGEAR 3 x Clear LCD Screen Protector Guard for Canon EOS Rebel T3/1100D SLR Digital Camera. Electronics. Camera & Photo. GTMax.
T: BANBERRY DESIGNS Mom Frame - Butterfly Themed Frame with a Loving Mother Saying - Mother Daughter. Home & Kitchen. Home Dcor. BANBERRY DESIGNS.
Answer: R