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

Input:
1st: PentaxistDL 6.1MP Digital SLR Camera with DA 18-55mm f3.5-5.6 AL Digital SLR Lens. Electronics. Camera & Photo. Pentax.
2nd: Samsung YX-M1Z Helix 1GB XM To Go Portable Satellite Radio. Electronics. Car & Vehicle Electronics. Samsung.
3rd: Compaq Presario 2195US Laptop (1.87-GHz Athlon XP 2500+, 512 MB RAM, 40 GB, DVD/CD-RW Combo Drive). Electronics. Computers & Accessories. Compaq.
4th: J-Tech Digital HDMI 1.4 Switch Switcher Box Selector 3 In 1 Out Audio Extractor w/Optical SPDIF & RCA L/R Audio Out & IR Control Supports...
5th: CyberPower  CP1500AVRLCD Intelligent LCD UPS System, 1500VA/900W, 12 Outlets, AVR, Mini-Tower. Electronics. Computers & Accessories. CyberPower.

Options:
A: wawpi Black USB 3.0 Adapter Coupler 5 Pack. Electronics. Computers & Accessories. wawpi.
B: iKlear iK-26K Complete Cleaning Kit. Electronics. Accessories & Supplies. iKlear.
C: Valeo Pound Medicine Ball With Sturdy Rubber Construction And Textured Finish. Sports & Outdoors. Sports & Fitness. Valeo.
D: Philip Whitney 5x5 Black Wood Picture Frame. Home & Kitchen. Home Dcor. Philip Whitney.
E: Cotton Linen Decorative Throw Pillow Fully assembled (American flag). Home & Kitchen. Bedding. MoonRest.
F: Darn Tough Hike/Trek Cushion Quarter Sock - Women's Green Tea Medium (Past Season). Sports & Outdoors. Outdoor Recreation. Darn Tough.
G: Programmable 5 Quart Slow Cooker (33453). Home & Kitchen. Kitchen & Dining. Hamilton Beach.
H: Hype® Pyramid Mini 6 W Speaker Ultra-portable Wireless Rechargeable Bluetooth 3D Stereo Speaker. Electronics. Portable Audio & Video. Hype.
I: Christmas Ornament Storage Box - IRIS BCB-60 (Clear/Red) (13.25" H x 16.75" W x 22.5" D). Home & Kitchen. Home Dcor. IRIS USA, Inc.
J: Nikon CL-1022 Soft Lens Pouch - Refurbished 70-300mm VR, 85mm f/2.8D PC. Electronics. Camera & Photo. Nikon.
K: Gigabyte GTX 960 Overclocked 2GB GDDR5 Graphics Cards GV-N960WF2OC-2GD. Electronics. Computers & Accessories. Gigabyte.
L: Andreannie Ink Painting Blue Whale Marine Organisms Cotton Linen Home Throw Pillow Case Personalized Cushion Cover NEW Home Office Decorative Square 18 X 18 Inches...
M: Intelligent Design Leona Comforter Set Full/Queen Size - Black, Aqua, Damask – 5 Piece Bed Sets – Peach Skin Fabric Teen Bedding for Girls Bedroom...
N: Bell Venture Bike Helmet. Sports & Outdoors. Outdoor Recreation. Bell.
O: Paderno World Cuisine Paper Doilies, 100 Pack, 14-1/8" Diameter. Home & Kitchen. Kitchen & Dining. Paderno World Cuisine.
P: Sig Sauer Romeo 4B 1X20 MM, 2 MOA Red Dot/ 65 MOA Circle Dot Battery Powered with Low Profile Torx Mount. Sports & Outdoors. Sports...
Q: LUNASIDUS V4BT-BG Cotton Jacquard 4-Piece Bath Towel Set, Beige. Home & Kitchen. Bath. LUNASIDUS.
R: Samsung Galaxy Tab S2 8"; 32 GB Wifi Tablet (White) SM-T713NZWEXAR. Electronics. Computers & Accessories. Samsung.
S: Bluetooth Keyboard Case for Apple iPad Mini - Navy Blue. Electronics. Computers & Accessories. Poetic.
T: XFX Radeon R7 260X 1075MHz 1GB DDR5 DP HDMI 2 X DVI Graphics Card (R7260XZNJ4). Electronics. Computers & Accessories. XFX.
Answer: R