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

Input:
1st: Sony MDR-IF240RK Wireless Headphone System. Electronics. Headphones. Sony.
2nd: Bluetooth 4.0 USB Adapter / Network / Dongle / for - Windows. Electronics. Computers & Accessories. GHS2.
3rd: Rosenice Pair of Replacement Foam Earpads Ear Pads Ear Cushions for Logitech H800 Wireless Headphones Headset (Black). Electronics. Accessories & Supplies. Rosenice.
4th: Qishare 10 11" 11.6" 11.6-inch 12 Inch Black Multi-Functional Business Briefcase/Messenger Case with Handle and Carrying Strap for MacBook Air 11'', Hp Stream 11(Black, 11.6-12'')...
5th: Foldable Bluetooth Keyboard, Jelly Comb B003B Dual Mode USB Wired & Bluetooth Keyboard with Touchpad Rechargeable for Windows Android Tablet Smartphone Surface and More-Updated (Black)...

Options:
A: 7INOVA AV500 Powerline Ethernet Adapter with Add-On WiFi AP/Extender, Dual Port-Kit. Electronics. Computers & Accessories. 7INOVA.
B: Sentey Thorx Headphones Headset With Microphone Wired HD Over the Ear Volume Control Audiophile Metal Band Rotation Cups Travel Carrying Case Included LS-4430 HD Gaming...
C: Carbon Activated Pre-Filter 4-pack for use with the GermGuardian FLT5250PT True Hepa Filter with Pet Pure Treatment Filter C Pet. Home & Kitchen. Heating, Cooling...
D: Speed Beez Ruger SP101 5 Shot 38/357 Loading Block For Speed Loaders. Sports & Outdoors. Sports & Fitness. Speed Beez.
E: Pflueger Lady President Spinning Reel. Sports & Outdoors. Sports & Fitness. Pflueger.
F: Yakima Bait Flatfish F-2 High Action Plug. Sports & Outdoors. Sports & Fitness. Yakima Bait.
G: Kefir Fermenter (0.35l/12oz) with Kefir Grains (12g). Home & Kitchen. Kitchen & Dining. Kefir Fermenter.
H: XSPC ATX PSU Bridge Tool (24 Pin), Black. Electronics. Computers & Accessories. XSPC.
I: Kinzi Sport Fruit Infuser Water Bottle, 27 oz. Sports & Outdoors. Sports & Fitness. Kinzi.
J: kensie Myrcella Ultra Plush & Soft Fleece Sherpa Throw Blanket Fuzzy Cozy and Warm Cover for Your Bed, Couch, and Sofa, 50 x 60 Inch,...
K: USB Light, Wirezoll Dimmable Micro USB LED Lamp with Flexible Gooseneck and 3 Brightness for Computer/ Keyboard / Notebook / Lapto (White). Electronics. Computers &...
L: Samsung UN55ES8000 55-Inch 1080p 240Hz 3D Slim LED HDTV (Silver) (2012 Model). Electronics. Television & Video. Samsung.
M: HP EliteBook 840 G1 14-inch Ultrabook (1.90GHz, Intel Core i5 4300U, 4GB Memory 180GB SSD Windows 7 Professional 64-bit (E3W30UT#ABA). Electronics. Computers & Accessories. HP.
N: Stock Your Home Gearbox Bedside Caddy. Home & Kitchen. Storage & Organization. Stock Your Home.
O: Attmu Clearance Sale Resistance Bands Tubes for Fitness Training, Includes 5 Best Quality ANTI-SNAP Bands, Heavy Duty Components - Anchor, Handles, Ankle Straps, Exercise Training...
P: Impossible PRD2804 Black and White Film for Polaroid 600-Type Camera Frame (Black). Electronics. Camera & Photo. Impossible.
Q: ProCase Stand Cover Folio Case with Bonus Stylus Pen for ASUS ZenPad S 8.0 Z580C. Electronics. Computers & Accessories. ProCase.
R: Sentey Headphone with Microphone for Travel Work Running Sport Kids Women Headphones Headset for Music Gaming Premium Mesh Cable Deluxe Carrying Case Included Ls-4224 PLUS...
S: Stylemaster Home Products Renaissance Home Fashion Belmont Reversible Sham, Standard, Coral. Home & Kitchen. Bedding. Style Master.
T: Safavieh Heritage Collection HG958A Handcrafted Traditional Oriental Blue and Gold Wool Round Area Rug (8' Diameter). Home & Kitchen. Home Dcor. Safavieh.
Answer: K