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: eCord (4.5 Amps/ 20W/ Turbo Speed) Quad Port USB Turbo Charger for iPod, iPad, iPhone, Android Smartphones, Tablets and Other USB Devices - Black. Electronics...
2nd: AmazonBasics Lightweight On-Ear Headphones - Black. Electronics. Headphones. AmazonBasics.
3rd: Sony MDRZX100 ZX Series Stereo Headphones (Blue). Electronics. Headphones. Sony.

Options:
A: Voguestrap Unisex 1800-1003S 3-Pack Strap Compatible with Fitbit Flex. Electronics. Wearable Technology. Voguestrap.
B: Sony MDRZX100 Headphones (Black). Electronics. Headphones. Sony.
C: Acer X203H bd 20-Inch LCD Monitor. Electronics. Computers & Accessories. Acer.
D: Silicone Baking Mat Set of 2, Half Sheet Size, Non-Stick Cookie Sheets, Bonus Premium Green Oven Mitt. Home & Kitchen. Kitchen & Dining. GLitzy Lifestyle.
E: Woodlore 84009 Classic Cedar Hanger. Home & Kitchen. Storage & Organization. Woodlore.
F: JTENG Tactical Belt 48" Canvas Tactical CQB Military Combat Duty Rescue Rigger Belt Outdoor Waistband Adjustable for Hunting Emergency Rigger Survival. Sports & Outdoors. Sports...
G: Ceramic Soup Cereal Pho Bowl, 8.75 Inch, 64 Ounce, 2-Pack, White Ivory. Home & Kitchen. Kitchen & Dining. MBW NW Brands.
H: Hop Boiling Bags - 5 Pack. Home & Kitchen. Kitchen & Dining. Home Brew Ohio.
I: Chic Home Pink Floral 8-Piece Embroidered Comforter Set, Queen, Black. Home & Kitchen. Bedding. Chic Home.
J: SealLine Pro Portage Pack 115-Liter Waterproof Expedition Backpack. Sports & Outdoors. Sports & Fitness. SealLine.
K: Contour Travel Back. Home & Kitchen. Bedding. Contour.
L: Cold Steel 4007231 Natchez Bowie in O-1 High Carbon 11 3/4" Blade. Sports & Outdoors. Sports & Fitness. Cold Steel.
M: SOG Jungle Warrior Fixed Blade F14N-CP - Hardcased Black 9.75" Blade, Rubber Handle, Nylon Sheath. Sports & Outdoors. Sports & Fitness. SOG.
N: Johnson Pumps of America 38502 Marine 90 Degree 500 GPH Cartridge Aerator Pump. Sports & Outdoors. Sports & Fitness. Johnson Pumps of America.
O: Etekcity 11lb/5kg Digital Kitchen Food Scale, Calibration Supported, 0.01oz Resolution. Home & Kitchen. Kitchen & Dining. Etekcity.
P: All Cart Wireless Bicycle Odometer,Speedometer Backlight. Electronics. GPS, Finders & Accessories. All Cart.
Q: Mountain House Vegetable Stew with Beef #10 Can. Sports & Outdoors. Outdoor Recreation. Mountain House.
R: Sandisk Sansa Clip 4 GB MP3 Player (Black). Electronics. Portable Audio & Video. SanDisk.
S: Ergo Chef ER83 Universal Knife Edge Guard Set , Multicolor. Home & Kitchen. Kitchen & Dining. Ergo Chef.
T: NOVICA Artisan Crafted Hand Blown Blue Recycled Glass Tumbler Glasses, 12 oz 'Cobalt Dreams' (set of 6). Home & Kitchen. Kitchen & Dining. NOVICA.


assistant
Answer: B