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: CamelBak Better Bottle Hands Free Adapter. Sports & Outdoors. Outdoor Recreation. CamelBak.
2nd: OUTBAGS USA NSC03 Nylon OWB Outside Pants Carry Holster w/ Mag Pouch. Family owned & operated. Made in USA. Sports & Outdoors. Sports & Fitness...
3rd: Continental GatorSkin DuraSkin Tire. Sports & Outdoors. Outdoor Recreation. Continental.
4th: 50 .40c Spear Darts. Sports & Outdoors. Sports & Fitness. Avenger.
5th: Propper Men's 100-Percent Cotton Boonie Sun Hat. Sports & Outdoors. Sports & Fitness. Propper.

Options:
A: Stainless Steel Salt Pepper Shakers Stylish & Modern Salt Cellar Pots and with Matching Shaker Stand. Home & Kitchen. Kitchen & Dining. Olwen's Kitchen.
B: Starlite Creations Indoor/Outdoor LED Mini Rope Light, 18FT, Multi-Color, 72 Lights. Home & Kitchen. Seasonal Dcor. Starlite Creations.
C: Einfach Stainless Steel Oval Soup Spoons Large Spoons Table Dinner Spoons Set of 6. Home & Kitchen. Kitchen & Dining. Einfach.
D: Phantom Aquatics Women's Marine Shorty Wetsuit. Sports & Outdoors. Outdoor Recreation. Phantom Aquatics.
E: Flash Furniture HERCULES Series Big & Tall 400 lb. Rated Black Mesh Executive Swivel Chair with Adjustable Arms. Home & Kitchen. Furniture. Flash Furniture.
F: Senseo Coffee Maker XL - Model 2018 Bundle including Senseo Coffee Variety Pack Sampler -6-flavor (Pack of 6). Home & Kitchen. Kitchen & Dining. Senseo.
G: Lamson KnifeSafe 8", Knife Blade Protector/Edge Guard, fits 8" Blades. Home & Kitchen. Kitchen & Dining. Lamson.
H: GROSCHE Replacement Glass Beaker for French Press, 1000 ml / 34 oz / 8 cup carafe glass beaker size). Home & Kitchen. Kitchen & Dining...
I: Clicgear Push Cart GPS Holder. Sports & Outdoors. Sports & Fitness. Clicgear.
J: KitchSense Stainless Steel Measuring Spoons Set - 5 Spoons Engraved with USA/Metric Measurements - Easy to Clean and Store - Strong Metal Body with Silicone...
K: Nicely Neat USB Rechargeable Ultra Bright LED Bicycle Tail Light, 150T. Sports & Outdoors. Outdoor Recreation. Nicely Neat.
L: Outerstuff NFL Youth Boys 8-20" Lineage Short Sleeve Slub Tee. Sports & Outdoors. Fan Shop. Outerstuff.
M: Kettler Home Exercise/Fitness Equipment: Favorit Rowing Machine. Sports & Outdoors. Sports & Fitness. Kettler.
N: Tervis 1084021 Superman Tumbler with Emblem and Red Lid 24oz, Blue. Home & Kitchen. Kitchen & Dining. Tervis.
O: Cambond® 3.3ft / 1.0M [Apple MFi Certified] 8-Pin Lightning to USB Charger and Data Sync Cable with Ultra Compact Connector Head for iPhone 6 6Plus...
P: Enviroboard - Antimicrobial Cutting Board 3 Set - 100% Microwave Sterilization & Bonus Microwave Lid Cover. Home & Kitchen. Kitchen & Dining. Sunlife Brands.
Q: LENMAR Replacement Battery for Plantronics Savi WH500, W440, W740 & W745 - Bluetooth Wireless Headset- Retail Packaging- Black. Electronics. Accessories & Supplies. Lenmar.
R: Nalgene Tritan Wide Mouth BPA-Free Water Bottle. Sports & Outdoors. Sports & Fitness. Nalgene.
S: Techno Source 12616 Zippy Sack Dino Twin Size. Home & Kitchen. Bedding. Techno Source.
T: MSR Hook Tent Stake Kit. Sports & Outdoors. Outdoor Recreation. MSR.


assistant
Answer: R