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: Based on the user's historical purchases, rank the items in options and predict the next product of the user's interest from the provided options.

Input:
Purchase History:
1st: Nikon D3100 DSLR Camera with 18-55mm f/3.5-5.6 Auto Focus-S Nikkor Zoom Lens (Discontinued by Manufacturer). Electronics. Camera & Photo. Nikon.
2nd: Belkin Emerge 032 Case for Apple iPod Touch 4th Generation (Blacktop). Electronics. Portable Audio & Video. Belkin.

Options:
A: Strong Camel 7-Feet Artificial Christmas Tree with Solid Metal Stand. Home & Kitchen. Seasonal Dcor. Strong Camel.
B: Apple iPad 2 MC769LL/A Tablet (iOS 7,16GB, WiFi) Black 2nd Generation. Electronics. Computers & Accessories. Apple.
C: 200FT (60M) Cat5e Direct Burial Waterproof RJ45 Network RJ45 Patch Cable CMXT Fully Tested Connectors Installed! - Black with Black Boot. Electronics. Computers & Accessories...
D: LifeSky Stainless Steel Insulated Travel Coffee Mug, Double Wall Vacuum Insulated Water Bottle, BPA Free Flip Cap for 1-Hand Operation, 16 oz. Home & Kitchen...
E: Zefal Replacement Bladder, 2-Liter. Sports & Outdoors. Outdoor Recreation. Zefal.
F: Mr Right Mrs Always Right Pillowcases, First Anniversary Gift Idea, Funny Gift for Him, Gifts for Husband. Home & Kitchen. Bedding. Custom-PillowCases-by-StockingFactory.
G: Wrights Multi Pleater 30yd Tape, White. Home & Kitchen. Home Dcor. Wright Products.
H: 1x Poster Eiffel Tower Landscape Paris City Girl Gift Love for Room Office Hall Art Print Decoration 30x20" (75x50cm) (001). Home & Kitchen. Wall Art...
I: 6" Clip Holder Aluminum Tactical Black Pen Good Quality.  Lastworld.
J: Lineco Self-Adhesive Acid-Free Photo Corners, 0.5 inches, Black, Package of 252 (533-0024PS). Electronics. Camera & Photo. Lineco.
K: Disney True Princess within Erasable Activity Table Set with 3 Markers. Home & Kitchen. Furniture. Disney.
L: SwitchDoc Labs DS3231, AT24C32 EPROM, Battery and Software. Electronics. Computers & Accessories. SwitchDoc Labs.
M: MaximalPower Reflective Fiber Optic Blinking Red LED White Stretch Safety ARM BAND w/Clip for Running Biking Cycling. Electronics. Portable Audio & Video. MaximalPower.
N: Pyle In Ear Back Electret Microphone-Professional Mini Portable Omnidirectional Headset Voice Audio Corded Condenser Mic w/Cable Wire for Sennheiser System or Studio Mixer PMEMSN12. Electronics...
O: POSRUS Antiglare Antifingerprint Screen Protector for Vizio VTAB1008 Tablet 8" **ONLY SOLD BY POSRUS**. Electronics. Computers & Accessories. POSRUS.
P: Mil-Spec Monkey Battlegirl Patch. Sports & Outdoors. Sports & Fitness. MilSpec Monkey.
Q: Precision Touch(TM) Dart Fine Point Active Stylus, An Active Stylus with a fine tip for iPad (Most Models, Samsung Galaxy Tab (All Models) (Black). Electronics...
R: Ultimate Gun Cleaning Kit, 65 Pieces Allen Handgun, Rifle, Shotgun Cleaning Kit. Sports & Outdoors. Sports & Fitness. Allen Company LLC.
S: Monoprice 10565 Premium 5.1 Channel Home Theater System with Subwoofer. Electronics. Television & Video. Monoprice.
T: BARSKA Gladiator 20-140x80 Zoom Binoculars (Green Lens). Electronics. Camera & Photo. BARSKA.


assistant
Answer: B