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 items in listed options based on the user's purchase history to determine the item that the user is most likely to purchase next. Output the item with the highest likelihood of being the next purchase.

Input:
Purchase History:
1st: CowboyStudio Doulbe Off-Camera Flash Shoe Mount Swivel Umbrella Kit for Select Nikon/Canon Models. Electronics. Camera & Photo. CowboyStudio.
2nd: Savage Seamless Background Paper - #1 Super White (107 x 36'). Electronics. Camera & Photo. Savage.
3rd: Pro 30-Inch Octagon Umbrella Speed lite Softbox Brolly Reflector with Grid. Electronics. Camera & Photo. CowboyStudio.
4th: Background Stand Backdrop Support System Kit 8ft by 10ft wide By Fancierstudio TB30. Electronics. Camera & Photo. Fancierstudio.
5th: Canon Deluxe Photo Backpack 200EG for Canon EOS SLR Cameras (Black with Green Accent). Electronics. Camera & Photo. Canon.
6th: Opteka SB-1 Universal Studio Soft Box Flash Diffuser for Canon EOS, Nikon, Olympus, Pentax, Sony, Sigma, & Other External Flash Units. Electronics. Camera & Photo...
7th: CowboyStudio NPT-04 4 Channel Wireless Hot Shoe Flash Trigger Receiver. Electronics. Camera & Photo. CowboyStudio.
8th: Bluetooth Headset Bluetooth 4.1 Wireless Headphone Neckband with Retractable Earbuds for iPhone, Samsung Galaxy, Android and Other Bluetooth-Enabled Devices. Electronics. Accessories & Supplies. 1958LLC.
9th: Bluetooth Adapter for Stereo Receiver or Headphones Free RCA Adapter. Portable Mini for Music Streaming on Home Sound System, Car, or Amplifier, from iPhone, Smartphone,...
10th: STK LP-E6 Battery for Canon 5D Mark II III and IV, 70D, 5Ds, 6D, 5Ds, 80D, 7D, 60D, 5Ds R DSLR Cameras BG-E14, BG-E13, BG-E11,...

Options:
A: Yes4All Stability Disc with Hand Pump – Multi Color Available (13 & 14 inch). Sports & Outdoors. Sports & Fitness. Yes4All.
B: Neewer for DJI Phantom 3 Standard Professional and Advanced, Protective Camera Lens Cap Protector Cover + Flower-Type Rose Petal Lens Hood Made of Premium ABS...
C: Black Steam Engine Burner With Pinon Natural Wood Incense - Incienso De Santa Fe. Home & Kitchen. Home Dcor. Incienso de Santa Fe.
D: Etekcity AC600 Dual Band USB WiFi Dongle / Wireless Network Adapter with WPS (2.4 GHz, 150Mbps / 5GHz, 433Mbps) (Certified Refurbished). Electronics. Computers & Accessories...
E: Luxury Fabric Shower Curtain with Floral Pattern (Sage) by Duck Bladesafe. Home & Kitchen. Bath. Duck Bladesafe.
F: D-Link Wireless N 300 Mbps Home Cloud App-Enabled Broadband Router (DIR-626L). Electronics. Computers & Accessories. D-Link.
G: EGO TROUT Nets. Sports & Outdoors. Sports & Fitness. EGO TROUT.
H: Belkin F5D7230V4 802.11g Wireless Cable/DSL Gateway Router. Electronics. Computers & Accessories. Belkin.
I: Cappuccino Finish Wood Wall 5-Tier Corner Bookshelf Bookcase. Home & Kitchen. Furniture. eHomeProducts.
J: Utopia Bedding Bed Ruffle Skirt - Brushed Microfiber Bed Wrap with Platform - Easy Fit - Gathered Style - 3 Sided Coverage (Twin - Grey)...
K: Cat Draft Block - Energy Efficient Decorative Door Draft Stopper – Keep Heat or Cool Air Indoors – Use on Doors, Windows even Fireplaces. Double...
L: IMEEA Demitasse Espresso Spoons Mini Dessert Spoons 18/10 Stainless Steel Bistro Spoons 4.5 Inch, Set of 6. Home & Kitchen. Kitchen & Dining. IMEEA.
M: New launched Popular Handicrafts Kp639 tie dye Hippie Tapestry wall hanging Beach Throw mandala Wall Art College Dorm Bohemian tapestries Wall Hangings 215X230 Cms. Home...
N: Elife Wood 10-Bottle Wine Rack (6 galsses). Home & Kitchen. Kitchen & Dining. Elife.
O: InterDesign Vinyl 4.8 Gauge Shower Liner, X-Long 72 x 96, Clear. Home & Kitchen. Bath. InterDesign.
P: 36" Venom Blowguns Stow-away™ Collapsing Black .40c Blowgun with Darts Made in USA. Sports & Outdoors. Sports & Fitness. Venom Blowguns.
Q: Physical Therapy Stretch Strap by Morning Sky - 10-Loop 73-inch Rehab Strap with Instructional Guide for Rehab, Stretching, Yoga. Sports & Outdoors. Sports & Fitness...
R: AcuRite 13021 Atomic Projection Alarm Clock with USB Charging. Home & Kitchen. Home Dcor. AcuRite.
S: SPIDER Chace-Wind 150 lbs Recurve Crossbow Red Dot Scope Package. Sports & Outdoors. Sports & Fitness. SPIDER.
T: Team Effort Collegiate 62" WindSheer Hybrid Umbrella. Sports & Outdoors. Fan Shop. Team Effort.


assistant
Answer: B