Instruction: Given the products the user has purchased in history, rank the items in the listed options and output the item that the user is most likely to purchase next. Answer from one of the options.

Input:
1st: Roku 1 Streaming Media Player (2710R). Electronics. Television & Video. Roku.
2nd: Sykik SPEA0218BT, Wireless Bluetooth 2.1 Multi Media speaker system, RCA input for Smart phones, Computers, laptops, gaming, music and more. Electronics. Portable Audio & Video...
3rd: Gateway DX4870-UR3D Desktop (3.0 GHz Intel Core i5-3330 Processor, 8GB DDR3, 1TB HDD, Windows 8) Black (Discontinued by Manufacturer). Electronics. Computers & Accessories. Gateway.
4th: StarTech.com 2U 19in Hinged Wall Mount Bracket for Patch Panels - 2U Wallmount Bracket - 2U Wall Bracket. Electronics. Accessories & Supplies. StarTech.
5th: Microsoft Sculpt Ergonomic Wireless Desktop Keyboard and Mouse - L5V-00001. Electronics. Computers & Accessories. Microsoft.
6th: ASUS X552EA 15-Inch Laptop (OLD VERSION). Electronics. Computers & Accessories. Asus.
7th: [UL Listed] Cable Matters Rackmount or Wallmount 24 Port Cat6 Patch Panel (Cat 6 RJ45 Patch Panel). Electronics. Computers & Accessories. Cable Matters.
8th: Sony HT-CT770 2.1 Channel 330W Sound Bar with Wireless Subwoofer. Electronics. Home Audio. Sony.
9th: TP-Link 16x4 AC1750 Wi-Fi Cable Modem Router | Gateway |  680Mbps DOCSIS 3.0 - Certified for Comcast XFINITY, Spectrum, Cox and more (Archer CR700)...
10th: Home 'n' Office Small Drop Over Cord Protector  60" - Color: Brown. Electronics. Accessories & Supplies. Electriduct.

Options:
A: NZXT Technologies FX 140mm Computer Case (Black/White). Electronics. Computers & Accessories. Nzxt.
B: Frabill Deluxe Bait Lid with Aeration Combo Pack, Yellow/White. Sports & Outdoors. Sports & Fitness. Frabill.
C: Nikon Coolpix 3700 3MP Digital Camera with 3x Optical Zoom. Electronics. Camera & Photo. Nikon.
D: Fun Express - 100 Ft Orange Pennant Banner Flags Party Event. Home & Kitchen. Event & Party Supplies. Fun Express.
E: Panasonic SC-HT1000 Progressive-Scan DVD Player/Recorder Home Theater System (Discontinued by Manufacturer). Electronics. Television & Video. Panasonic.
F: Royal Consumer Products 21055  13" X 48' Shelf Liner Paper, White Bond, Roll. Home & Kitchen. Kitchen & Dining. Royal.
G: Sony NWZW262WHI Walkman MP3 Player. Electronics. Portable Audio & Video. Sony.
H: Plantronics Cordless Phone Headset M210C. Electronics. Computers & Accessories. Plantronics.
I: Ultra X-Finity ULT31848 600-Watt Power Supply Unit (Black). Electronics. Computers & Accessories. Ultra Products.
J: LG 24" Wide 1080p Slim LED Monitor, VGA, DVI. Electronics. Computers & Accessories. LG.
K: LG Electronics 5889W1A003B Microwave Oven Turntable Rotating Support. Home & Kitchen. Kitchen & Dining. LG.
L: Invista Comforel Queen Pillow Set (2 Queen Pillows). Home & Kitchen. Bedding. Pacific Pillows.
M: Spider Holster SpiderLight Black Handstrap. Electronics. Camera & Photo. SpiderHolster.
N: BONECO Fan & Air Circulator F500. Home & Kitchen. Heating, Cooling & Air Quality. BONECO.
O: Stack 52 Suspension Exercise Cards for TRX, Woss, and Ritfit Trainer Straps. Suspended Bodyweight Resistance Workout Game. Video Instructions Included. Fun at Home Fitness Training...
P: HappyZone - (Black) Portfolio Leather Case Cover with Built In Stand for Sony Tablet S 9.4-Inch Wi-Fi 16GB/32GB. Electronics. Computers & Accessories. HappyZone.
Q: New Red Sports Stereo Wireless Bluetooth Stereo Earbuds Headset Headphone with In-line Microphone and Control, Built in Li-battery, Noise Cancellation Technology, Listen Music or Telephone...
R: AUKEY HDMI Extender, Powered HDMI Repeater Over Enthernet Cable, Supports Full HD 1080P up to 196ft. Electronics. Television & Video. AUKEY.
S: Fox Run 5538 Orange Juicer, Manual. Home & Kitchen. Kitchen & Dining. Fox Run.
T: Elixir Arm Cooler Cooling Sleeves UV Protective Compression Arm Sleeves, 1 Pair. Sports & Outdoors. Sports & Fitness. The Elixir.
Answer: R