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: Given the products the user has purchased in history, rank the items in the listed options and output the item that the user is most likely to purchase next. Answer from one of the options.

Input:
Purchase History:
1st: Whitmor 10 Tier Shoe Tower - 30 Pair - Closet Organizer. Home & Kitchen. Storage & Organization. Whitmor.
2nd: Eva-dry Edv-1100 Electric Petite Dehumidifier, White. Home & Kitchen. Heating, Cooling & Air Quality. Eva-Dry.

Options:
A: Deep purple Leather Case w/ Built-In Bluethooth Keyboard for Apple iPad (1ST GENERATION iPAD ONLY). Electronics. Computers & Accessories. Yorktek.
B: iRobot Roomba 4210 Discovery Vacuuming Robot, White. Home & Kitchen. Vacuums & Floor Care. iRobot.
C: Sabrent 4 Port Portable USB 3.0 Hub for Ultra Book, MacBook Air, Windows 8 Tablet PC – Black (HB-B4U3). Electronics. Computers & Accessories. Sabrent.
D: (5) 8" AR500 Steel Gong Shooting Target 3/8 One Hole. From Bullseye Metals. Sports & Outdoors. Sports & Fitness. Bullseye Metals.
E: GM CLIMBING UIAA Certified 30kN Swing Cheek Micro Pulley CE General Purpose. Sports & Outdoors. Outdoor Recreation. GM CLIMBING.
F: Sony XS-GTX6931 GTX Series 6.5" Component Speakers (Discontinued by Manufacturer). Electronics. Car & Vehicle Electronics. Sony.
G: Ka-Bar 9140 USMC Vietnam War Knife with Leather Sheath (7-Inch). Sports & Outdoors. Outdoor Recreation. Ka-Bar.
H: Avenger Dual Fuel Vent Free Infrared Heater - 30,000 BTU, Model# FDT3IR. Home & Kitchen. Heating, Cooling & Air Quality. Avenger.
I: Fintie iPad mini 1/2/3 Kiddie Case - Light Weight Shock Proof Convertible Handle Stand Kids Friendly for Apple iPad mini 1 / iPad mini 2...
J: Safavieh Cape Cod Collection CAP351A Hand Woven Flatweave Geometric Diamond Natural and Blue Jute Area Rug (3' x 5'). Home & Kitchen. Home Dcor. Safavieh.
K: Coleman 16-Quart Excursion Cooler. Sports & Outdoors. Outdoor Recreation. Coleman.
L: Rogue River Tactical 12 Piece Tornado Throwing Knives Black Knife Set Ninja Martial Arts Weapon. Sports & Outdoors. Sports & Fitness. The X Bay.
M: iPlug 3.5mm Earbud Splitter Cable for iPod White. Electronics. Portable Audio & Video. Generic.
N: Mini Smallest PChero Wireless Invisible Headphones Headset Earphones Earbuds with Mic For iPhone, iPad, Sony, HTC and Most Bluetooth Smartphones, Perfect for Using at Work...
O: HEM Clove 100 Incense Sticks (5 x 20 stick packs). Home & Kitchen. Home Dcor. Hem.
P: Wood Handle Professional Corkscrew Double Hinge Waiters / Server Wine Key #CH003-Pro. Home & Kitchen. Kitchen & Dining. TIPSY Wine Accessories.
Q: Norpro 809A 809 Salad Maker, One Size. Home & Kitchen. Kitchen & Dining. Norpro.
R: HyLoft 00967 45-Inch by 15-Inch Wall Shelf, Off White, 2-Pack. Home & Kitchen. Home Dcor. HyLoft.
S: Sand Bags - Empty Beige-Tan or Green Woven Polypropylene Sandbags with BUILT-IN TIES, UV Protection; Size: 14" x 26", Qty of 100 (Beige - Tan)...
T: Everydaysource Black VOIP / SKYPE Handsfree Headset [with Microphone ] For VOIP / SKYPE. Electronics. Computers & Accessories. Everydaysource.


assistant
Answer: R