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: Ace Martial Arts Supply Cobra System Self Cocking Pistol Tactical Crossbow, 80-Pound.  Ace Martial Arts Supply.
2nd: Ace Martial Arts Supply Japanese Samurai Katana Sword Maintenance Cleaning Kit. Sports & Outdoors. Sports & Fitness. Ace Martial Arts Supply.
3rd: Handmade Sword - Japanese Style Samurai Tanto Swords, Functional, Hand Forged, 1045 Carbon Steel, Heat Tempered, Full Tang, Sharp, Musashi Tsuba, Black Wooden Scabbard. Sports...
4th: Japanese Sword Choji Oil. Sports & Outdoors. Sports & Fitness. The Institute of Asian Arts.
5th: Ace Martial Arts Supply Ninja Stealth Black Throwing Knives with Nylon Case (Set of 3). Sports & Outdoors. Sports & Fitness. Ace Martial Arts Supply.

Options:
A: Maverick Housewares CT-02 Redi-Chek Heavy Duty Candy/Oil/Deep Fry Thermometer, Black. Home & Kitchen. Kitchen & Dining. Maverick.
B: All NEW Mini Lightweight Wireless Stereo Sports/Running & Gym/Exercise Bluetooth Earbuds Headphones Headsets w/Microphone for Iphone 5S 5C 4S 4, Ipad 2 3 4 New...
C: 360-degree Swivel Leather Case Compatible with Apple iPad 2, Red. Electronics. Computers & Accessories. SANOXY.
D: Rokinon Full Cine 5 Lens Kit – 35mm + 24mm + 14mm + 85mm + 8mm for Canon EF/Black Magic + Protective Photography Hard Case...
E: ProfessionalBags 1000 Milliliter Adjustable Neoprene Sport WaterBottle Case Cover Sleeve Bag Wide Mouth Insulated Pouch Holder With Shoulder Strap. Sports & Outdoors. Sports & Fitness...
F: AudioSource LS300-C Video Shielded Center Channel Speaker (Single) (Discontinued by Manufacturer). Electronics. Home Audio. Audiosource.
G: Birthday Candles, 60 Count, Spiral Brights. Home & Kitchen. Home Dcor. Party.
H: AT&T S10-S1 Remote Control by AT&T. Electronics. Accessories & Supplies. ATT.
I: Nikon 28-200mm f/3.5-5.6G ED IF Autofocus Nikkor Zoom Lens (Discontinued by Manufacturer). Electronics. Camera & Photo. Nikon.
J: White Pillar Candles - Rustic Unscented Church Candle Pillars For Centerpiece or Table Decoration, Wedding or Baptism, Long Burning, Natural Wax Candles Round 5 Inch...
K: Trintec 24 Hour Military Time Zulu Time Wall Clock 14" - ZT24 Black. Home & Kitchen. Home Dcor. Trintec.
L: Guacamole Bowl and Pestle. LARGE 8 in. This Molcajete (Mortar and Pestle Set) Is a Uniquely Mexican Handcraft Lava Rock Cooking Tool. Home & Kitchen...
M: Tamrac M.A.S. Large Modular Accessory Belt (Black). Electronics. Camera & Photo. Tamrac.
N: Zak Designs Wild Flora 11-Inch Melamine Dinner Plate. Home & Kitchen. Kitchen & Dining. Zak Designs.
O: Nikon COOLPIX S9700 16.0 MP Wi-Fi Digital Camera with 30x Zoom NIKKOR Lens, GPS, and Full HD 1080p Video (Black) (Certified Refurbished). Electronics. Camera &...
P: Bin 8 Multi Kitchen Tool (juices, strains, grates, and more!). Home & Kitchen. Kitchen & Dining. Bento & Co.
Q: ECR4Kids Deluxe Hardwood Activity Play Table for Kids, Solid Wood Childrens Table for Playroom/Daycare/Preschool, 24 x 48 Inch Rectangle, Natural Finish. Home & Kitchen. Furniture. ECR4Kids.
R: Ace Martial Arts Supply Ninja Stealth Black Throwing Knives with Nylon Case (Set of 3). Sports & Outdoors. Sports & Fitness. Ace Martial Arts Supply.
S: Seville Classics Expandable Under-Sink Shelf with steel Perforated Panels. Home & Kitchen. Kitchen & Dining. Seville Classics.
T: TARION Portable Canvas Digital Camera Photography Shoulder Case Bag Fits 2xCamera 2xLens and 1xFlash for SLR DSLR Mirrorless Color Green. Electronics. Camera & Photo. TARION.


assistant
Answer: R