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: Birchwood Casey BC33344 Gun Scrubber Synthetic Safe Cleaner, 13 oz. Sports & Outdoors. Sports & Fitness. Birchwood Casey.
2nd: A-ZOOM 357 Magnum Precision Snap Caps (6 Pack). Sports & Outdoors. Sports & Fitness. A-ZOOM.
3rd: HKS MK3-A Revolver Speedloader for Colt MK3 & MK5/King Cobra/Peacekeeper/Ruger Security 6. Sports & Outdoors. Sports & Fitness. HKS.

Options:
A: Premium Sansa View Hard Crystal Case - Clear with Beltclip and Neckstrap. Electronics. Portable Audio & Video. Midea Tech.
B: Novelty Place Multipurpose Training Cones (Set of 12), Soft & Durable Traffic Cone for Safety, Agility, Soccer, Football & Other Activities - Neon Orange 7...
C: 2-Piece 12" x 15" Flexible Food Chopping Cutting Mats. Home & Kitchen. Kitchen & Dining. Artisan.
D: Thule Vertex XT Hitch Mount Bike Carrier. Sports & Outdoors. Outdoor Recreation. Thule.
E: American Metalcraft SSBV1 Stainless Steel Bud Vase, Satin Finish, Silver. Home & Kitchen. Home Dcor. American Metalcraft.
F: Tripp Lite HDMI Extender Equalizer, Active Repeater for Video and Audio 1920x1200,1080p at 24Hz (HDMI F/F)(B122-000). Electronics. Accessories & Supplies. Tripp Lite.
G: Canon Elura 70 MiniDV Camcorder w/18x Optical Zoom (Discontinued by Manufacturer). Electronics. Camera & Photo. Canon.
H: BambooMN Brand - Spa Style Raised Bamboo Bathmat - Large Rectangle. Home & Kitchen. Bath. BambooMN.
I: 10" Standard Filter Housing, Clear/Black, 3/4" in/out. Home & Kitchen. Kitchen & Dining. Applied Membranes, Inc.
J: CamLockBox Security Box Compatible with PlotWatcher Pro. Sports & Outdoors. Sports & Fitness. CamLockBox.
K: SMAKN® Dc/dc Converter 12v Step Down to 6V/3A Power Supply Module. Electronics. Accessories & Supplies. SMAKN.
L: Lizard Skins Clear Adhesive Frame Protector. Sports & Outdoors. Outdoor Recreation. Lizard Skins.
M: Hanwei Practical Elite Katana Sword. Sports & Outdoors. Sports & Fitness. CAS Hanwei Swords.
N: Xawy SPIGEN iPad Mini Retina Case [Tough Armor] [Champagne Gold] Air Cushion Technology Corners Protective Case with Dual Layer for iPad Mini 2 - Champagne...
O: Evecase SlimBook Leather Folio Stand Case Cover for Dell Latitude 10-10.1'' Windows 8/8 pro Tablet (ST2, LAT10-6238BK) - Black. Electronics. Computers & Accessories. Evecase.
P: Timbuk2 Parkside Laptop Backpack. Electronics. Computers & Accessories. Timbuk2.
Q: Pyramid 17th Century World Map Poster Print. Home & Kitchen. Wall Art. Pyramid America.
R: Pachmayr Tactical Grip Glove for Glock 19, 23, 25, 32, 38. Sports & Outdoors. Sports & Fitness. Pachmayr.
S: Battery for Dell Latitude E5400 E5500 (7800mAh) Extended Capacity 9 Cell. Electronics. Computers & Accessories. Dell.
T: Dealzip Inc® 3.5 Inch Mini Nylon Straw Cleaners Tube Cleaning Brush Set-5 pcs. Home & Kitchen. Kitchen & Dining. Dealzip Inc.


assistant
Answer: R