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: Harbinger Men's BioFlex WristWrap Lifting Gloves. Sports & Outdoors. Sports & Fitness. Harbinger.
2nd: Aquaovo The Alter Ego Personal Filtration Bottle by. Sports & Outdoors. Sports & Fitness. Aquaovo.
3rd: Thule Upslope Snowsports Backpack, 20L. Sports & Outdoors. Outdoor Recreation. Thule.
4th: adidas Leather Weight Belt, 4-Inch Width. Sports & Outdoors. Sports & Fitness. adidas.
5th: Women's Core Compression MicroModal Over The Calf Socks.  Tommie Copper.
6th: Tommie Copper Women's Core Compression MicroModal Crew Socks.
7th: Zensah Plantar Fasciitis Sleeve - Relieve Heel Pain, Arch Support, Reduce Swelling - Compression Foot Sleeve, Plantar Fasciitis Sock. Sports & Outdoors. Sports & Fitness...

Options:
A: Hidden Camera Nanny Cam Wireless Hidden Spy Camera WiFi Belt Mini Spy Hidden Camera with Motion Detection 1080P Spy Video Camera Recorder with Playback-in Home...
B: Sony ICF-C318 Clock Radio with Dual Alarm (Black) (Discontinued by Manufacturer). Electronics. Home Audio. Sony.
C: Black Roller - Foam High Density Roller - Extra Firm with 2 Year Warranty. Sports & Outdoors. Sports & Fitness. Fladora.
D: Stuhrling Original Men's Aquadiver Dive Quartz Analog Waterproof Sports Blue Dial Wrist Watch Bracelet with Stainless Steel. Sports & Outdoors. Outdoor Recreation. Stuhrling Original.
E: SmartStereo Premium Speaker for Yoga,Metal Case,5W with 10-hours Playtime,66-Foot Bluetooth Range. Optimized Crisp and Clear sound performance.Special designed for Yoga practicer. Electronics. Computers & Accessories...
F: Pioneer VSX-1021-K 7.1 Home Theater Receiver, Glossy Black (Discontinued by Manufacturer). Electronics. Home Audio. Pioneer.
G: Optimus F-1211 Oscillating Table Fan, 12". Home & Kitchen. Heating, Cooling & Air Quality. Optimus.
H: Adjustable Monitor Wall Mount LCD Arm for 10-24 inch 10" 14" 19" 20" 21" 22" 23" 24" Computer Screen, 11 lbs Capacity. Electronics. Accessories &...
I: Lightning Cable, 6 Ft iPhone 6S Charger F-color Long Apple MFI Certified Nylon Braided Lightning to USB Cable for iPhone 8 7 6S 6 Plus...
J: Xiemin Replacement Charging Cable and Bluetooth USB Wireless Sync Dongle for Fitbit Charge / Charge HR / Surge / Flex / Force Activity Monitor Trackers...
K: CAP Rubber Coated Dumbbell Weights. Sports & Outdoors. Sports & Fitness. CAP Barbell.
L: Wald 896 Cruiser Bicycle Gull-Wing Handlebar. Sports & Outdoors. Outdoor Recreation. Wald.
M: Corkcicle Canteen Waterman Collection-Water Bottle & Thermos-Triple Insulated Shatterproof Stainless Steel, 16 oz, Waterman Seafoam. Home & Kitchen. Kitchen & Dining. Corkcicle.
N: Digital SLR Camera Body Only + 64GB + Polaroid Tripod + Monopod + Ritz Gear Bag + Spare Battery + Cleaning Kit + Remote Control...
O: Paderno World Cuisine Blue Carbon Steel Crepe Pan / 10 1/4" Induction Ready Pancake Pan. Home & Kitchen. Kitchen & Dining. Paderno World Cuisine.
P: HOSL Giraffe Wearing Glasses Square Decorative Throw Pillow Case Cushion Cover 17.317.3 Inch(44CM44CM). Home & Kitchen. Bedding. HOSL.
Q: Eagle Creek Travel Gear Compact Comfort Travel Pillow,Willow. Home & Kitchen. Bedding. Eagle Creek.
R: Incredibly Soft and Absorbent Memory Foam Bath Mat, 20 By 30-inch, Navy Blue by WPM. Home & Kitchen. Bath. WPM.
S: (11x17) Back to the Future Michael J Fox Movie Poster. Home & Kitchen. Wall Art. MG Poster.
T: Crack of Dawn Kayak Rudder with Mounting Kit. Sports & Outdoors. Outdoor Recreation. Crack of Dawn.


assistant
Answer: K