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: ENHANCE NIGHTLUX Outdoor LED Camping Lamp Rechargeable Lantern USB - 42 Lumens, LED Flashlight with Hand Crank & Hanging Clip Great for Camping, Boating, Power...
2nd: Supernova Halo 180 Extreme Rechargeable LED Camping and Emergency Lantern - The Brightest, Most Versatile, and Compact Utility Lantern Available - Perfect for Backpacking -...
3rd: Zippo 4-In-1 Woodsman. Sports & Outdoors. Outdoor Recreation. Zippo.
4th: MTM Crossbow Bolt Case. Sports & Outdoors. Sports & Fitness. MTM.

Options:
A: MSR Child Resistant Fuel Bottle Cap. Sports & Outdoors. Outdoor Recreation. MSR.
B: Generic Professional DSLR Microphone Kit for Canon EOS 5D Mark II III 6D 7D 60D 60Da T5i T4i T3i T3 M SL1. Electronics. Camera &...
C: Brand New 10 Sets (30 Pcs) of Darts 2d and Aluminium Flights Assorted Wholesale. Sports & Outdoors. Sports & Fitness. Gator.
D: Verus Cell Phone Case for LG G4 2015 - Retail Packaging - Coffee Brown. Sports & Outdoors. Fan Shop. Verus.
E: Kurt Adler UL 10-Light 5-Point Glitter Star Christmas Treetop, Silver. Home & Kitchen. Seasonal Dcor. Kurt Adler.
F: YooMee Asus Eee Pad Transformer PRIME TF201 Slimfit Black Leather Case Cover Folio with Multi-Angle Stand. Electronics. Computers & Accessories. YOO.MEE.
G: 1 Camel Commercial-Merry Christmas-Woot! Woot! Coffee Mug-CLOSEOUT PRICE. Home & Kitchen. Kitchen & Dining. TheGag.
H: American Furniture Alliance Mali Flex Futon with Adjustable Armrests. Home & Kitchen. Furniture. American Furniture Alliance.
I: Suncast Recycle Bin Kit. Home & Kitchen. Storage & Organization. Suncast.
J: Aukeo Headphaones Adapter 3.5mm Aux Jack Adaptor 2 in 1 Earphone Audio Music Splitter Cable Accessories, Suppor IOS11-12 -White. Electronics. Accessories & Supplies. Aukeo.
K: Wilson Staff Nexus Carry Golf Bag. Sports & Outdoors. Sports & Fitness. Wilson Golf.
L: Ksmile® 1 Pair Right Left Angle Micro USB Male 90 Degree USB Male to Micro Female Plug Adapters (1 Pair Right Left Angle Adapters). Electronics...
M: Ubiquiti AIRGATEWAY PRO Installer (AG-PRO-INS). Electronics. Computers & Accessories. Ubiquiti Networks.
N: 2 Piece Solid Taupe Sheer Curtains Panels Window Treatment Drape 55" X 84". Home & Kitchen. Home Dcor. Qutain Linen.
O: Large 1 Real Red 1 Black with White Dots Spots Band for Fitbit FLEX Only With Clasps Replacement /No tracker/. Electronics. Wearable Technology.
P: SBONY Feiyu Tech G4 USB Remote Control for Feiyu G4 3-Axis Handheld Gimbal (FY G4 G4S Wired Remote). Electronics. Camera & Photo. SBONY.
Q: Umber Decorative Ball Set. Home & Kitchen. Home Dcor. Quotech.
R: FNA-32 Custom Handmade Damascus Steel Folding Knife - Beautiful Camel Bone Handle with Damascus Steel Bolsters. Knife can vary slightly. Sports & Outdoors. Sports &...
S: Bissell Zing Bagless Accessory Kit, 34Z1. Home & Kitchen. Vacuums & Floor Care. Bissell.
T: New Star Foodservice 43013 Plastic Handle Butter Spreader, 7.5-Inch, Black, Set of 4. Home & Kitchen. Kitchen & Dining. New Star Foodservice.


assistant
Answer: R