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 items in listed options based on the user's purchase history to determine the item that the user is most likely to purchase next. Output the item with the highest likelihood of being the next purchase.

Input:
Purchase History:
1st: Hanna Kay Mattress Protector King size. Home & Kitchen. Bedding. Hanna Kay.
2nd: 1 X Draft Beer Faucet with Brass Lever- Chrome. Home & Kitchen. Kitchen & Dining. KegWorks.
3rd: KegWorks 1 X The Tap Soother- Draft Beer Faucet Cap. Home & Kitchen. Kitchen & Dining. KegWorks.
4th: BuffaloTools CNCRSH Deluxe Can Crusher. Home & Kitchen. Kitchen & Dining. Buffalo Tools.

Options:
A: 4 Pack Premium 100% Cotton Pillowcase - Queen Size 20"x32" pillow cover (Beige) By La Vivien. Home & Kitchen. Bedding. La Vivien.
B: 10 PCS new arrivals high quaulity Fresh Artificial Mini Real Touch PU/ latex Corn Poppies Decorative Silk fake artificial poppy flowers for Wedding holiday Bridal...
C: Meister Pro Boxing Gloves w/ Wrist Support (Pair). Sports & Outdoors. Sports & Fitness. Meister MMA.
D: 1 X 10 Pcs Screw Fixing 5.5x2.1mm Female CCTV DC Power Connector Plug Adapter. Electronics. Security & Surveillance. TOOGOO(R).
E: Komputerbay 8GB (2 X 4GB) DDR2 DIMM (240 pin) 800MHZ PC2-6400 PC2-6300 Desktop RAM with Red Heatspreaderss for extra Cooling CL 5-5-5-12. Electronics. Computers &...
F: Premium Clear Crystal 7 Inch Screen Protector for Magellan RoadMate 9055 7-Inch Bluetooth Portable GPS Navigator. Electronics. GPS, Finders & Accessories. Tiesto.
G: KNOG Boomer Wearable Rear Light. Sports & Outdoors. Outdoor Recreation. KNOG.
H: RM Locomotive Train Engine Metal Cookie Cutter for Baking / Birthday Party Favors / Scrapbooking Stencil. Home & Kitchen. Kitchen & Dining. Myco Imports.
I: Alween Car Wireless Bluetooth FM Transmitter Kit with Hands-free Calling, USB Charging and Music Controls (All Bluetooth Devices). Electronics. Car & Vehicle Electronics. ALWEEN.
J: Panasonic SA-HE100K Home Theater Receiver (Discontinued by Manufacturer). Electronics. Home Audio. Panasonic.
K: Decade Awards Toilet Bowl Trophy | Last Place Loser Award | Golden Throne Prize | 5 Inch Tall - Free Engraved Plate on Request. Sports...
L: Giggle Golf Friends 3 Putt Golf Towel And Friends 3 Putt Poker Chip. Sports & Outdoors. Sports & Fitness. Giggle Golf.
M: Sennheiser OMX 70 Clip-On In-Ear Stereo Sport Headphone (Green) (Discontinued by Manufacturer). Electronics. Headphones. Sennheiser.
N: Kingston 4 GB microSDHC Class 4 Flash Memory Card SDC4/4GBET. Electronics. Computers & Accessories. Kingston.
O: Hapurs Cleaning Tools Accessories Dust Blower Ball Rubber + Brush + Keycap Remover Cleaning Tools for Lens Filter Digital Camera Keyboard. Electronics. Camera & Photo...
P: Under Armour Women's Storm Swacket Full Zip. Sports & Outdoors. Sports & Fitness. Under Armour.
Q: Chirstmas Sale -Hindu Brass OM Wall Hanger, 3 1/2" Tall. Home & Kitchen. Storage & Organization.
R: Bio-Shield UV-C Air Sanitizer System, Cleans Air of Bacteria, Germs, Mold and Allergens. Home & Kitchen. Heating, Cooling & Air Quality. BIO SHIELD.
S: Abbyson Living Misha Tufted Fabric Accent Chair in Antique Brown. Home & Kitchen. Furniture. Abbyson Living.
T: Saunders Double Eagle Pro Wrist Rocket Slingshot w/ Twin Flat Bands. Sports & Outdoors. Sports & Fitness. Saunders.


assistant
Answer: R