Task: Sequential_Recommendation

system
You are a helpful assistant. The assistant first thinks about the reasoning process in the mind by using Belief-Desire-Intention (BDI) framework and then provides the user with the answer. The reasoning process and answer are enclosed within <think> </think> and <answer> </answer> tags, respectively. 
Below is an instruction that describes a task. After thinking, when you finally reach a conclusion based on the customer's intention, desire and belief, clearly state the BDI thinking process within <think> </think> and then the answer within <answer> </answer> tags.


user 
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:
Purchase History:
1st: Coby MPCD521 Personal MP3/CD Player with 120 Second Anti-Skip Protection, Black. Electronics. Portable Audio & Video. Coby.
2nd: Cubeternet Bluetooth Optical mini Mouse for Computers and Android Tablets, Smartphones. Electronics. Computers & Accessories. Cubeternet.
3rd: Apple iPad (first generation) MB292LL/A Tablet (16GB, Wifi). Electronics. Computers & Accessories. Apple.
4th: HDE Magnetic Folding Leather Folio Case Cover Stand for Apple iPad 1st Generation Tablet w/Screen Protector & Stylus (Black). Electronics. Computers & Accessories. HDE.
5th: Xcelite DCT300V Die-Cast Steel Flush Cut Point DataCom Cable Tie Gun with Steel Handle, 7" Length. Electronics. Accessories & Supplies. Apex Tool Group.
6th: HDE Case for iPad 2 3 4 Leather Case with Screen Protector - Professional Folio Cover with Smart Magnetic Closure, Multiple Viewing Angles and Pocket...

Options:
A: Hallmark Keepsake Ornament: A CHRISTMAS STORY Ralphie Cleans Up. Home & Kitchen. Home Dcor. Hallmark.
B: Boston Bruins High 5 Vintage Cuffed Pom Hat. Sports & Outdoors. Fan Shop. Mitchell & Ness.
C: Old Timer 25OT Folding Hunter Folding Pocket Knife. Sports & Outdoors. Sports & Fitness. Schrade.
D: Dell Inspiron 17 i17RM-2903sLV 17.3-Inch Laptop (2.0 GHz Intel Core i7-3537U Processor, 8GB DDR3, 1TB HDD, Windows 8) Moon Silver [Discontinued By Manufacturer]. Electronics. Computers...
E: Canterbury ENTERPRISES 8" Gas Valve Firepl Key. Home & Kitchen. Heating, Cooling & Air Quality. Canterbury.
F: 20 Pack - 10" Reactive Splatter Targets - Glowshot - Multi Color - Gun and Rifle Targets - Glow Shot. Sports & Outdoors. Sports &...
G: Go Power! GP-SF-5 SUNfilm 5 Watt Solar Panel. Sports & Outdoors. Sports & Fitness. Go Power!.
H: Park Tool GP-2 Glueless Bicycle Patch Kits--10 Packs. Sports & Outdoors. Outdoor Recreation. Park Tool.
I: NEEWER® 72mm 72 mm 850nm 850 nm Infrared IR Pass Filter. Electronics. Camera & Photo. Neewer.
J: Hamilton Beach Stack & Snap 10 Cup Food Processor 70720. Home & Kitchen. Kitchen & Dining. Hamilton Beach.
K: HIC Ramekins, Fine White Porcelain Souffle, 3-Inch, 4-Ounce Capacity, Set of 6. Home & Kitchen. Kitchen & Dining. HIC Harold Import Co.
L: NEEWER i-TTL/iTTL off-camera coiled Sync remote cord for Nikon flash SC-29. Electronics. Camera & Photo. Neewer.
M: Acase Google Nexus 7 Case - Leather Case Folio with multi view Stand & Wake/Sleep Function (BLACK). Electronics. Computers & Accessories. Acase.
N: Disney Mickey Classic Cool Shower Curtain. Home & Kitchen. Bath. Disney.
O: LG Electronics 32LB5600 32-Inch 1080p 60Hz LED TV (2014 Model). Electronics. Television & Video. LG.
P: Urinary Incontinence Products Protection - Thin Waterproof Mattress Cover with Leak Barrier (Full/Twin). Home & Kitchen. Bedding. Everyday Home.
Q: KuGi Samsung Galaxy Tab E 8.0 case with keyboard, Ultra-thin Detachable Keyboard Stand Portfolio Case / Cover for Samsung Galaxy Tab E 8.0 tablet (Black)...
R: Etymotic High-Fidelity Earplugs, ER20XS Large Fit, 1 pair, Polybag Packaging. Electronics. Headphones. Etymotic Research.
S: Laptop Backpack,Winblo 15 15.6 Inch College Backpacks Lightweight Travel Daypack - Black. Electronics. Computers & Accessories. Winblo.
T: Mainstays Red Stonewear Kitchen Canister Set, 4pc. Home & Kitchen. Kitchen & Dining. Mainstays.


assistant
Answer: R