Instruction: Rank the items in options and predict the user's next purchase from the listed options by analyzing her historical purchases.

Input:
1st: Cobra 18WXSTII CB Radio - 40 Channel, Sound Tracker, NOAA Weather Channels, Dual Watch, Instant 9. Electronics. Portable Audio & Video. Cobra.
2nd: ARRIS / Motorola SURFboard SB5101U DOCSIS 2.0 Cable Modem. Electronics. Computers & Accessories. Motorola.
3rd: Amp Wiring Kit | BOSS Audio KIT-ZERO 10 Gauge Installation Kit. Electronics. Car & Vehicle Electronics. BOSS Audio Systems.
4th: Foho FHTVAD55 Low Profile TV Wall Mount Bracket for Most 32 inches to   55 inches  Many from 20 to 65 inches LCD...

Options:
A: Intel Desktop Motherboard LGA1155 DDR3 1600 ATX - BOXDZ77RE-75K. Electronics. Computers & Accessories. Intel.
B: Bissell OptiClean Cyclonic Bagless Canister Vacuum, 1535 - Corded. Home & Kitchen. Vacuums & Floor Care. Bissell.
C: HDE Digital Compass Large Multi Function Directional Reader with Temperature, Date, and Time. Sports & Outdoors. Outdoor Recreation.
D: MAYBO SPORTS Bluetooth Headphones Cordless 4.1 Wireless Earbuds with Mic Sweatproof Sport Stereo Headset Noise Cancelling Neckband Earphones. Sports & Outdoors. Fan Shop. MAYBO SPORTS.
E: Divatex Grace Microfiber Duvet Twin Mini Set, Red. Home & Kitchen. Bedding. Divatex Home Fashions.
F: Home Essentials Beehive Dispenser on Metal Stand, Clear. Home & Kitchen. Kitchen & Dining. Home Essentials & Beyond.
G: Bormioli Rocco Quattro Stagioni 10-Ounce Small Bowls, Set of 2. Home & Kitchen. Kitchen & Dining. Bormioli Rocco.
H: SHIMANO 200IPG Curado RH Baitcast Reel, Grey. Sports & Outdoors. Sports & Fitness. SHIMANO.
I: Samsung Series 5 Wi-Fi 12.1-Inch Chromebook (Arctic White). Electronics. Computers & Accessories. Samsung.
J: Klymit Inertia XL Ultralight Sleeping Pad. Sports & Outdoors. Outdoor Recreation. Klymit.
K: Steren 255-045 6-Feet 3.5mm Stereo Plug to 2-RCA Plug Y Audio Patch Cord. Electronics. Accessories & Supplies. STEREN.
L: Sharp R-305KS 1-Cubic-Foot 1100-Watt Microwave Oven, Stainless. Home & Kitchen. Kitchen & Dining. Sharp.
M: Shimano PDM980. Sports & Outdoors. Outdoor Recreation. SHIMANO.
N: Rothco Aluminum Canteen Cup Stove and Stand. Sports & Outdoors. Outdoor Recreation. Rothco.
O: Thermaltake 120mm Pure 12 Series Black Quiet High Airflow Case Fan CL-F011-PL12BL-A. Electronics. Computers & Accessories. Thermaltake.
P: 100 Plastic Flower Hawaiian Tropical Luau Lei Party New. Home & Kitchen. Event & Party Supplies. Fun Express.
Q: Chef's Choice 6920001 692 International Keep Hot Thermal Electric Kettle, 1.5 L, Stainless Steel. Home & Kitchen. Kitchen & Dining. ChefsChoice.
R: Inateck 2X 2.5 Inch SSD to 3.5 Inch Internal Hard Disk Drive Mounting Kit Bracket (SATA Data Cables and Power Cables Included) (ST1002S). Electronics. Computers...
S: 2.5" 44-Pin Female to Female IDE Converter Cable – 6 Inch. Electronics. Computers & Accessories. Micro SATA Cables.
T: Brownells Aluma-Hyde II Epoxy Based Firearms Finish (Magpul Flat Dark Earth).  Brownells.
Answer: R