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: The user's purchase history implies her preferences. Rank the items in the options based on the user's preferences. Output the item that the user is most likely to purchase next from the options.

Input:
Purchase History:
1st: Corsair Hydro Series Extreme Performance Liquid CPU Cooler H80i. Electronics. Computers & Accessories. Corsair.
2nd: PNY DDR3 4GB 1333MHz (PC3-10666) CAS 9 1.5V PC Memory Desktop Module (MD4096SD3-1333). Electronics. Computers & Accessories. PNY.
3rd: Aeotec Multisensor 6, Z-Wave Plus 6-in1 motion, temperature, humidity, light, UV, vibration sensor. Electronics. Security & Surveillance. Aeon Labs.

Options:
A: CaseCrown Ace Flip Case Cover (Green Glow) with Elastic Band Closure for Amazon Kindle Fire. Electronics. Computers & Accessories. CaseCrown.
B: 5MP (2592x1920p) 8 Channel 4K NVR Network PoE IP Security Camera System - HD 5MP 1920p 2.8~12mm Varifocal Zoom (1) Bullet and (1) Dome IP...
C: 2015 Asus 19.5" Touchscreen Portable AIO Desktop (Intel Core i5-4200U, 8 GB DDR3L RAM, 1 TB HDD, 802.11 AC WiFi, Webcam, USB 3.0, Bluetooth, 5...
D: 550 Paracord Shotgun Rifle Sling - Traditional 2 Point Adjustable Strap for Camping Hunting Outdoor Sports. Sports & Outdoors. Sports & Fitness. CAMPSNAIL.
E: OtterBox Defender Series for iPad mini HD - Black. Electronics. Computers & Accessories. OtterBox.
F: Kastar CASIO NP-20 / NP20 Battery Charger Compatible with CASIO Exilim EX Series Casio Exilim NP-20 NP20 Battery for Exilim EX-M1, EX-M2, EX-M20, EX-S1, EX-S2,...
G: Cuisinart DBM-8GC Grind Chamber (Lid Sold Separately). Home & Kitchen. Kitchen & Dining. Cuisinart.
H: Viking 4040-3713-CGY Ceramic Nonstick Bakeware Crisper Sheet Pan, 13 Inch. Home & Kitchen. Kitchen & Dining. Viking Culinary.
I: TEMP SAVER Stainless Steel Vacuum Insulated Wide Mouth Water Bottle with Straw Cap, 18 oz. Sports & Outdoors. Sports & Fitness. TEMP SAVER.
J: Snuggie Fleece Blanket with Sleeves Zebra. Home & Kitchen. Bedding. Snuggie by AllStar Products.
K: Beartooth StockGuard 2.0 - Premium Neoprene Gun Stock Cover - Rifle Model - MADE IN USA. Sports & Outdoors. Sports & Fitness. Beartooth Products.
L: Belkin Universal Classic Case / Cover for Samsung Galaxy 10-Inch Tablets (Camellia & Cherry Blossom). Electronics. Computers & Accessories. Belkin.
M: Parasound Zphono MM/MC Phono Preamplifier with USB. Electronics. Home Audio. Parasound.
N: Masterchef Santoku Knives, Set of 3, Black. Home & Kitchen. Kitchen & Dining. Prime Pacific.
O: Coat Key Holder 4 Hook Rack, Rustic Cast Iron Anchor, Nautical Wall Decor, 10-inch. Home & Kitchen. Storage & Organization. Moby Dick.
P: RockShox Reverb Standard Bleed Kit. Sports & Outdoors. Outdoor Recreation. RockShox.
Q: Leather Style Flip Case for 80/120/160 Gb Ipod Classic (Black). Electronics. Portable Audio & Video. ELECTROPLUS.
R: Samsung Gear IconX 2016 Cordfree Fitness Earbuds with Activity Tracker - Black - Discontinued by Manufacturer. Electronics. Headphones. Samsung.
S: Joseph Joseph Hands On Salad Set, Stone. Home & Kitchen. Kitchen & Dining. Joseph Joseph.
T: Nikon 55-200mm f/4-5.6G ED IF AF-S DX VR Zoom Nikkor Lens + 52mm UV Glass Filter + Accessory Kit for Digital SLR Cameras. Electronics. Camera...


assistant
Answer: R