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: iPhone 6s Case, SUPCASE Apple iPhone 6 Case Water Resist Full-body Protection Heavy Duty Case with Built-in Screen Protector and 3 Interchangeable Covers (Space Gray/Silver/Gold),...
2nd: Halter Home Mechanic Repair Bike Stand - With Work Tray And Handlebar Holder. Sports & Outdoors. Outdoor Recreation. Halter.

Options:
A: Konus 7116 15x-45x65mm Spotting Scope with Tripod And Case. Sports & Outdoors. Sports & Fitness. Konus.
B: LG Electronics NP7550 Bluetooth Speaker (2015 Model). Electronics. Portable Audio & Video. LG.
C: Tendak 3 Ports HDMI Switch 3 x 1 HDMI Switcher with Pigtail Cable Supports 3D, 1080P, HD Audio for Chromecast Stick/HD-DVD Sky-STB Xbox360 (3 in...
D: Serta | Relaxed Fit Durable Woven Linen Canvas Furniture Slipcover (T-Chair, Natural). Home & Kitchen. Home Dcor. Perfect Fit.
E: Sea Turtle Two Sides Rectangle Zippered Pillowcase Pillow Cover 20x30 inches. Home & Kitchen. Bedding. InterestPrint.
F: Mossy Oak Graphics Breakup Pink 14004-BUP Shot Gun Camo Kit Vinyl. Sports & Outdoors. Sports & Fitness. Mossy Oak Graphics.
G: DIGISION® Wine Bottle Foil Cutter (Black). Home & Kitchen. Kitchen & Dining. DIGISION.
H: Ebros World War Green Beret Army Rusted Skull Statue 7"Long Military Themed Skeleton Cranium Figurine. Home & Kitchen. Home Dcor. Ebros Gift.
I: Burris 300216 Armalite Rifle Tripler Gen 2, Pivot Ring X-High 1", Matte. Sports & Outdoors. Sports & Fitness. Burris.
J: H2O Audio Amphibx Waterproof Armband for iPod nano, Medium MP3 Players and Phones (Discontinued by Manufacturer). Electronics. Portable Audio & Video. H2O Audio.
K: KINESIS PD7DXT-WR DXT Wireless Ergonomic Mouse 2 (Light Click). Electronics. Computers & Accessories. KINESIS.
L: Creative Co-op Recycled Glass Hanging Cross. Home & Kitchen. Home Dcor. Creative Co-op.
M: Celestron Power Tank. Electronics. Camera & Photo. Celestron.
N: Camping Lantern - LED Solar Rechargeable Camp Light Flashlights - Emergency Lamp - Power Bank for Android Cell Phone IOS Iphone. Sports & Outdoors. Outdoor...
O: for SAMSUNG Galaxy Note5 Stylus Touch S Pen EJ-PN920 for Galaxy Note 5 SM-N920 (Grey). Electronics. Computers & Accessories. WIRELESSTRADING.
P: Climb X Kinder Kids Climbing Shoe with Free Sickle M-16 Climbing Brush. Sports & Outdoors. Outdoor Recreation. Climb X.
Q: Serving Spoons Set of 2 Indian Dinnerware Serveware. Home & Kitchen. Kitchen & Dining. ShalinIndia.
R: Mighty Flexi Fender Set with Dynamo Connection.  Mighty.
S: Eastland Amber Glass Votive Holders Set of 72. Home & Kitchen. Home Dcor. Eastland.
T: Widdy Classic American Style Steel Tip Darts, 12 Pack. Sports & Outdoors. Sports & Fitness. Widdy.


assistant
Answer: T