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: Millett 45 Degree Matte Picatinny Style Mount for Red Dot. Sports & Outdoors. Sports & Fitness. Millett.
2nd: Legendary Whitetails Ladies Lucky Deer Hunting Socks. Sports & Outdoors. Sports & Fitness.
3rd: Solomone Cavalli 223 Bore Sight Laser Red Dot In-Chamber Cartridge .223 REM / 5.56 Red Dot Laser Sighter. Sports & Outdoors. Sports & Fitness. Solomone...

Options:
A: Tera Grand - USB 3.0 to SATA II and IDE Hard Drive Adapter, Universal 2.5/3.5/5.25 Drives with Power Adapter. Electronics. Computers & Accessories. Tera Grand.
B: 1 X 32 oz. Amber EZ Cap Kombucha Bottle. Home & Kitchen. Kitchen & Dining. Home Brew Ohio.
C: Incipio Leather Kickstand Case for Zune 80/120 GB (Black). Electronics. Portable Audio & Video. Incipio.
D: Household Essentials 122101 Small Tabletop Ironing Board with Folding Legs - Magic Rings Cover and Pad. Home & Kitchen. Irons & Steamers. Household Essentials.
E: Ambesonne Shower Curtain Collection, Ocean Decor Fall Wooden Bridge Seasons Lake House Nature Country Rustic Home Art Paintings Pictures for Bathroom Seascape Decorations, Brown Beige...
F: Fisher-Price Kid-Tough Binoculars. Electronics. Camera & Photo. Fisher-Price.
G: Golf Tees Etc 3 1/4" Step Down Tees - Pack of 100. Sports & Outdoors. Sports & Fitness. Golf Tees Etc.
H: JTENG Military Men Belt Tactical Nylon Canvas Outside Army Trouser Buckle Strap. Sports & Outdoors. Sports & Fitness. JTENG.
I: Intel E29477-002 Socket 1366 Copper Core/Aluminum Heat Sink & 4" Fan w/4-pin Connector up to Core i7 3.06GHz. Electronics. Computers & Accessories. Intel.
J: ASA Flight Timer 2 - Digital Aviation Flight Timer. Electronics. Car & Vehicle Electronics. ASA.
K: TaoTronics Wireless Portable Bluetooth Transmitter Connected to 3.5mm Audio Devices, Paired with Bluetooth Receiver, Bluetooth Dongle, A2DP Stereo Music Transmission for TV. Electronics. Home Audio...
L: Tervis 1138397 Skinny Flowers Tumbler with Wrap and Red Lid 16oz, Clear. Home & Kitchen. Kitchen & Dining. Tervis.
M: Garmin vívokeeper Wrist Band, 9-Pack. Sports & Outdoors. Sports & Fitness. Garmin.
N: sanhe Samhe Disposable Rain Poncho One Size Fit All with Hood 10 Per Pack Random Color. Sports & Outdoors. Outdoor Recreation. sanhe.
O: Bose SoundTouch Wireless Adapter for CineMate Systems. Electronics. Television & Video. Bose.
P: WEB POWER SWITCH WLCD SCREEN 10 OUTLETS. Electronics. Accessories & Supplies. DIGITAL LOGGERS.
Q: BTExpert Battery For Asus A31-X401 A32-X401 A41-X401 A42-X401 F301 F301A F301A1 5200Mah 6 Cell. Electronics. Computers & Accessories. BTEXPERT.
R: Grand Gun Works Ride Ready Car Holster. Sports & Outdoors. Sports & Fitness. Grand Gun Works.
S: Proxelle Surgemini-Red Wireless Waterproof Bluetooth Speakers - Red. Electronics. Portable Audio & Video. Proxelle.
T: Tenba Vector Daypack Large Cadmium - Red (637-294). Electronics. Computers & Accessories. Tenba.


assistant
Answer: R