Instruction: The user's purchase history implies her preferences. Rank the items in the options based on the user's preferences. Output the item that the user is most likely to purchase next from the options.

Input:
1st: Plano Protector Single Pistol Case. Sports & Outdoors. Sports & Fitness. Plano.
2nd: Champ FlipFix Divot Repair Tool . Sports & Outdoors. Sports & Fitness. Champ.
3rd: Flex Weight (10 Pack). Sports & Outdoors. Sports & Fitness. ProActive Sports.
4th: 27" Full Tang Black Blade Fantasy Ninja Sword w/ Sheath. Sports & Outdoors. Sports & Fitness. K EXCLUSIVE.
5th: AIM Sports 90 Lumens Flashlight with Mount/Pressure Switch. Sports & Outdoors. Sports & Fitness. AIM Sports.
6th: RAD Sportz Kayak Wall Hangers 100 LB Capacity Kayak Storage For Garage or Shed. Sports & Outdoors. Outdoor Recreation. RAD Sportz.
7th: ARSUXEO Winter Warm UP Thermal Softshell Cycling Jacket Windproof Waterproof 15-k. Sports & Outdoors. Outdoor Recreation. ARSUXEO.
8th: American Classic Bicycle Tubeless Wheels Valve Stems (Anodized Red - 46mm). Sports & Outdoors. Outdoor Recreation. American Classic.

Options:
A: ~Upek Eikon Trueme - Fingerprint reader - USB - External Mac PC Windows -No Software. Electronics. Security & Surveillance. Eikon.
B: Lacdo Shockproof Tablet Sleeve Case for 11 inch New iPad Pro 2018 | iPad Pro 10.5 inch | 9.7 inch New iPad | iPad Air...
C: Large Print Key-Top Stickers - Black On Yellow Background, Non-Transparent Oversized Characters Keyboard Stickers for the Visually Impaired and Low Vision. Electronics. Computers & Accessories...
D: Braided 10FT Micro USB 3.0 Charger Sync Data Cable For Samsung Galaxy S5 i9600 Note 3 N9000 (Blue). Electronics. Computers & Accessories. Shopping_Shop2000.
E: OctoRose Royalty Oversize Wedding Bedding Bedspread Quilts Set (Blue, Full/Queen). Home & Kitchen. Bedding. OctoRose.
F: Okuma Ultralite Spinning Reel 4.4:1 3 Bearings. Sports & Outdoors. Sports & Fitness. OKUMA.
G: Blackburn Scorch 1.0 Front USB Rechargeable Light. Sports & Outdoors. Outdoor Recreation. Blackburn.
H: Panasonic NT-ZP1V Breakfast Collection 2-Slice Toaster, Stainless Steel & Violet. Home & Kitchen. Kitchen & Dining. Panasonic.
I: NCAA Men's Performance Polo Shirt. Sports & Outdoors. Fan Shop. Campus Merchandise.
J: Assurant 4-Year Camera Protection Plan ($0-$24.99). Electronics. Electronics Warranties. Assurant Solutions.
K: TYR Technoflex 4.0 Femme Performance Goggles. Sports & Outdoors. Sports & Fitness. TYR.
L: XION XON-180 Steel ATX Mid Tower Computer Case - Retail (Meshed Black/Red). Electronics. Computers & Accessories. Xion.
M: Jack for iPhone 8 Adapter Headphones Charging and Aux Audio Adaptor Accessories Converter Extender Stereo Charger Cables Music for iPhone7/7Plus/8Plus/iphonex/10 Converter Support 10.3/11 iOS-White. Electronics...
N: eForcity HDMI-M to DVI-M Cable, 3 feet / 1 metre. Electronics. Accessories & Supplies. n&g.
O: Sunbeam Royal Warmth Twin Heated Mattress Pad. Home & Kitchen. Bedding. Sunbeam.
P: White Feather Down Comforter - King Size. Home & Kitchen. Bedding. Sweet Jojo Designs.
Q: MYBAT SAMSIIIHPCSKSC004NP Unique Skullcap Protective Cover for Samsung Galaxy SIII - 1 Pack - Retail Packaging - Solid Red/Black. Sports & Outdoors. Fan Shop. MyBat.
R: Most Comfortable Bike Seat for Men - Mens Padded Bicycle Saddle with Soft Cushion - Improves Comfort for Mountain Bike, Hybrid and Stationary Exercise Bike...
S: 9-5\8" Ultramount Riser System for the Hornady Lock-N-Load AP Press. Sports & Outdoors. Sports & Fitness. InLine Fabrication.
T: Klean Kanteen Vacuum Insulated Food Canister with Stainless Lid. Home & Kitchen. Bath. Klean Kanteen.
Answer: R