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: HUMAN GEAR GoTubb, 14cc. Home & Kitchen. Kitchen & Dining. humangear.
2nd: WMF Profi-Plus 12 1/2-Inch Stainless Steel Ball Whisk. Home & Kitchen. Kitchen & Dining. WMF.
3rd: Kikkerland Ring Silicone Drink Markers, Set of 6. Home & Kitchen. Kitchen & Dining. Kikkerland.

Options:
A: Sleek BLUE 256GB BRAND NEW USB 2.0 Thumb Pen Flash Drive Memory Stick Storage. Electronics. Computers & Accessories. USB Flash Drives.
B: USB Cable For Nikon CoolPix 2100/2200/3100/3200/3700/4200/4600/4800/5200/5600 & Many More!. Electronics. Computers & Accessories. Neewer.
C: Rymemo Bluetooth Wireless HandFree Sports Stereo Headsets Earphones Universal Vibration Neckband Style Running Gym Exercise Headphones Earbuds Earpiece with Microphone & Rechargeable Li-ion Battery For...
D: Zinus Adjustable Legs for Wooden Box Springs (Set of 12). Home & Kitchen. Furniture. Zinus.
E: Hi power 12V DC 2A CCTV Security Camera Power Supply Adapter with 4 (2.1mm) Channel Connectors Port. Electronics. Accessories & Supplies. Hi Power CCTV.
F: Seattle Sports Super Deluxe Bilge Pump. Sports & Outdoors. Sports & Fitness. Seattle Sports.
G: Sirio Antenna Mag 145 PL Magnetic Mount & Cable. Electronics. Portable Audio & Video. Sirio Antenna.
H: Dark Green Chime Candle 20 pack. Home & Kitchen. Home Dcor. New Age.
I: Apple iMac "Core 2 Duo" 2.0 20-Inch All-In-One Desktop A1224 / MA876LL - Intel Core2Duo@2GHz, 4GB RAM, 250GB HD, 8X DL "SuperDrive", ATI Radeon HD2400...
J: Lush Decor Lucia Shower Curtain, 72-Inch by 72-Inch, Ivory. Home & Kitchen. Bath. Lush Decor.
K: Microwave Spatter Screen, Red Beads. Home & Kitchen. Kitchen & Dining. Smartwares.
L: MDW 2pcs Charger and 4pcs Screen Protector for Fitbit Charge HR - A Must Have Accessory Pack- Fitbit Charge HR Charger and Fitbit Charger HR...
M: UT Wire UTW-CP501-BG 5-Feet Cord Protector with 3-Channels, Beige. Electronics. Accessories & Supplies. UT Wire.
N: Wodbottom Silicone Wedding Rings for Men - Perfect for Active Men, Athletes, Working Out, Fitness, Wods - Safe, Comfortable, Stylish -Hypoallergenic, Medical Grade Ring. Sports...
O: Polar G3 GPS Sensor Set. Sports & Outdoors. Sports & Fitness. Polar.
P: EFUN Nextbook Next7P12-8G with WiFi 7.0" Touchscreen Tablet PC Featuring Android 4.0 (Ice Cream Sandwich) Operating System, Black. Electronics. Computers & Accessories. Nextbook.
Q: Belkin Gigabit Ethernet ExpressCard with 1 External Port (F5U250). Electronics. Computers & Accessories. Belkin.
R: Activeon CX Action Camera (Onyx Black). Electronics. Camera & Photo. Activeon.
S: Hookless RBH32MY128 Tan Palm Leaves Embroidery Shower Curtain with Peva -  Tab. Home & Kitchen. Bath. Arcs & Angles.
T: 3L Hydration System Water Bag Pouch Backpack Bladder Climbing Hiking. Sports & Outdoors. Outdoor Recreation. Pinkcoo.


assistant
Answer: K