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: Okuma Crisium Graphite 2-Piece Fly Rod, 8wt 9-Feet, Graphite / Green. Sports & Outdoors. Sports & Fitness. OKUMA.
2nd: Scientific Anglers Air Cel Fly Line. Sports & Outdoors. Sports & Fitness. Scientific Anglers.

Options:
A: rooCASE Screen Protector Film for Google Nexus 10 Tablet (4-Pack x2 Anti-Glare Matte and x2 HD Invisible). Electronics. Camera & Photo. rooCASE.
B: Fujifilm Instax Mini Instant Rainbow Film, 10 Sheets, 3 Value Set. Electronics. Camera & Photo. Fujifilm.
C: Braun 7050-193 Chopping Attachment Bowl, 500ml. Home & Kitchen. Kitchen & Dining. Braun.
D: Arkansas Sharpeners Ceramic Sharpening. Home & Kitchen. Kitchen & Dining. Arkansas Sharpeners.
E: CyclingDeal Bicycle Display Floor Rack Bike Indoor Rear Stays Stand. Sports & Outdoors. Outdoor Recreation. CyclingDeal.
F: Bendable Plus Size Bumps-Be-Gone Flexible Foam Hangers 24-Pack. Home & Kitchen. Storage & Organization. Luxury Living.
G: Generic USB Adapter Extender USB to Rj45 Over Cat5 5e 6 to 150ft Network Ethernet Cable. Electronics. Computers & Accessories. JTZ.
H: Imax 3d Glasses. Electronics. Accessories & Supplies. Tom's 3d Glasses.
I: Candles4Less - 6" x 20" Cylinder Vase - Perfect for weddings, floral use and centerpieces. Home & Kitchen. Home Dcor. Candles4Less.
J: CK Products Leaves Assortment Chocolate Mold. Home & Kitchen. Kitchen & Dining. CK Products.
K: Set of 4 Apple shaped red ceramic CANISTERS country kitchen home decor NEW. Home & Kitchen. Kitchen & Dining. KKM.
L: Westclox 32042BK 1950's Retro Black Case Convex Glass Clock, 9.5-Inch. Home & Kitchen. Home Dcor. Westclox.
M: Sony VAIO VGN-TX650P/B 11.1" Laptop (Intel Pentium M Processor 753, 512 MB RAM, 60 GB Hard Drive, DVD+R Dbl Layer/DVD+/-RW Drive). Electronics. Computers & Accessories...
N: Softbox Light Flash Popup Diffuser Studio with Portable Design for External Speedlites by ENHANCE - Works With Neewer , Yongnuo , Altura , Bower and...
O: [Ultra-Long Battery Life] MoKo Bluetooth Earphones, Sports Running Sweatproof Wireless HiFi Bluetooth Earbuds/Headphones/Headset with Microphone, for iPhone & Android Phone, Black & Yellow. Electronics. Headphones...
P: Toshiba Thrive Portfolio 360 Case for 10-Inch Tablet (PA1495U-1TWC). Electronics. Computers & Accessories. Toshiba.
Q: Thermaltake Pure Series Cooling Case Fan CL-F006-PL12BL-A Black/Blue. Electronics. Computers & Accessories. Thermaltake.
R: Ultra Bright LED Lantern, Collapsible Camping Lantern, Super Bright, Lightweight and Water Resistant, Suitable for: Hiking, Camping, Emergencies, Hurricanes, Outages. Sports & Outdoors. Outdoor Recreation...
S: LOVO Fitted Sheet Fragrance of Provence King. Home & Kitchen. Bedding. LOVO.
T: 2 Piece Blackout Window Curtain Grommet Panels, Total Width 100 X 84 (Beige). Home & Kitchen. Home Dcor. ruthy's textile.


assistant
Answer: R