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

Input:
Purchase History:
1st: BlackBerry PRD-38548-003 Playbook 7" Tablet, 64GB. Electronics. Computers & Accessories. BlackBerry.
2nd: HP v221w Metal 16GB USB 2.0 Flash Drive - P-FD16GHP221-GE. Electronics. Computers & Accessories. HP.
3rd: HP v165w 16GB USB 2.0 Flash Drive - Blue - P-FD16GHP165-GE. Electronics. Computers & Accessories. HP.
4th: Acer W3-810-1600 Atom Z2760 2GB/32GB 8.1" windows 8 (Certified Refurbished). Electronics. Computers & Accessories. Acer.
5th: APC UPS Battery Backup & Surge Protector, 550VA, APC Back-UPS (BE550G). Electronics. Computers & Accessories. APC.
6th: GE Personal Security Window/Door Alarm, DIY Home Protection, Burglar Alert, Magnetic Sensor, Off/Chime/Alarm, Easy Installation, Ideal for Home, Garage, Apartment, Dorm, RV and Office, 56789...
7th: CWK® New Replacement Laptop Notebook Battery for Acer Aspire 5330 5715Z 5720G 5739G 6530 6930G 6935G 7520Z Gateway NV73 NV74 NV78 NV79 AS07B41 AS07B31 AS07B32...
8th: Apple iPad 2 MC769LL/A Tablet (iOS 7,16GB, WiFi) Black 2nd Generation. Electronics. Computers & Accessories. Apple.
9th: EBL 906 Smart Charger for AA AAA C D 9V Rechargeable Batteries with 4 Pieces 5000mAh C Rechargeable Batteries. Electronics. Accessories & Supplies. EBL.

Options:
A: Mesh Lingerie Delicates Wash Bag 6-Pack #121-6. Home & Kitchen. Storage & Organization.
B: rooCASE Neoprene Sleeve Carrying Case for Western Digital My Passport Essential SE 1TB Portable Hard Drive WDBACX0010BBK - Dark Blue. Electronics. Computers & Accessories. rooCASE.
C: Gigabyte Intel LGA 2011-3 X99 4way SLI/CrossFireX Gaming Killer LAN Motherboards GA-X99-GAMING 5. Electronics. Computers & Accessories. Gigabyte.
D: Columbia Pilsner Peak Pant. Sports & Outdoors. Outdoor Recreation. Columbia.
E: Whitmor Deluxe Double Rod Adjustable Closet Organization System. Home & Kitchen. Storage & Organization. Whitmor.
F: Otis M-16 Chamber Brush. Sports & Outdoors. Sports & Fitness. Otis Technology.
G: AKG Acoustics K28NC Noise Cancelling Headphones. Electronics. Headphones. AKG.
H: Powerextra 12V 3600mAh Ni-Mh Battery Pack for Neato Botvac Series and Botvac D Series Neato Battery Neato Botvac Battery 70e, 75, 80, 85, D75, D80,...
I: United Cutlery Elite Forces Small Paracord, Pink. Sports & Outdoors. Sports & Fitness. United.
J: International Concepts 1S61-683 Saddle Seat Barstool Walnut 29". Home & Kitchen. Furniture. International Concepts.
K: TopTech TechPure TT-FM-2020 QB OEM Replacement Filter - QwikBox(R). Home & Kitchen. Heating, Cooling & Air Quality. TopTech.
L: Serfas MSC-226 Reactive Gel Saddle - Men's. Sports & Outdoors. Outdoor Recreation. Serfas.
M: Mity-Lite MESH ONE Folding Guest Chair, Black, 4 pack - MESHONE. Home & Kitchen. Furniture. Mity-Lite.
N: Smith & Wesson SWMP1BS-BRK Magic A/O Folder. Sports & Outdoors. Sports & Fitness. Smith & Wesson.
O: English Tea Store 6 Cup Teapot White Gloss Finish. Home & Kitchen. Kitchen & Dining. English Tea Store.
P: Beistle 54121 Phone Box Favor Boxes, 3 by 81/2-Inch. Home & Kitchen. Event & Party Supplies. Beistle.
Q: Talley Marlin Models 336-1895 Scope Mount. Sports & Outdoors. Sports & Fitness. Talley.
R: Hoover 5PK R Vac Bag. Home & Kitchen. Vacuums & Floor Care. Hoover.
S: Tap Antibacterial Collapsible Water Bottle BPA Free Flat Hydration Soft Canteen. Sports & Outdoors. Sports & Fitness. Tap.
T: SABRE Wireless Home Security Door Window Burglar Alarm with LOUD 120 dB Siren - DIY EASY to Install. Electronics. Security & Surveillance. Sabre.


assistant
Answer: T