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: Russell Athletic Men Cotton Tanks. Sports & Outdoors. Sports & Fitness.
2nd: Russell Athletic Men’s Essential Cotton Tank Top. Sports & Outdoors. Sports & Fitness.

Options:
A: Running Belt - #1 Premium Running Fuel Treadmill Fitness Workout Belt For iPhone 6 6S 6 Plus 7 7S / Plus & Android Smartphones -...
B: UCEC High Quality Audio Adapter Plug - 2.5mm Male to 3.5mm Female. Electronics. Accessories & Supplies. UCEC.
C: Sugoi Men's MidZero RC Pro Tight (Black, Small) . Sports & Outdoors. Outdoor Recreation. SUGOi.
D: Adcraft PZ-18718 18" OD, Aluminum Pizza Screen. Home & Kitchen. Kitchen & Dining. Adcraft.
E: Vello Off-Camera TTL Flash Cord for Canon Cameras (33'). Electronics. Camera & Photo. Vello.
F: Metal Baker's Rack OrganizerStand Shelf Kitchen M icrowave Cart Storage Countertop Dorm Microwave Stand Kitchen Storage Shelving with Cutting Board Microwave Shelf Hooks for Kitchen...
G: Chef's Design 20-Inch Double Burner Reversible Grill/Griddle. Home & Kitchen. Kitchen & Dining. Chef's Design.
H: YETI Bottle Key Bottle Opener. Home & Kitchen. Kitchen & Dining. YETI.
I: UMBRELLALABORATORY Alice in Wonderland Tea Party necklace-Drink me bottle. Home & Kitchen. Event & Party Supplies. UMBRELLALABORATORY.
J: Fruit Infused Water Bottle (Red) 24 Ounce BPA-free non-slip plastic + Free Recipe Ebook. Sports & Outdoors. Sports & Fitness.
K: GAMMA RAY 007 Harmful Blue Light Eye Strain Protection Video Gaming Glasses with Minimal Color Distortion Anti Screen Glare, UV400 for Digital Screens. Electronics. Computers...
L: ITALIAN 1500 Thread Count 3PC TWIN Sheet Set, STRIPED IVORY. Home & Kitchen. Bedding. Home Couture.
M: LotFancy 2.5 Inch /9.5mm SATA 2ND HDD HARD DISK DRIVE Caddy/Adapter. Electronics. Computers & Accessories. LotFancy.
N: House Day Pinch Grip Hangers - Pant Hangers 12" 25pcs Black Hangers with Polished Swivel Hooks and Padded Clips - Pants Clothes Hangers#2. Home &...
O: MyCableMart 6 INCH 3.5mm Slim Mono TS (2 Conductor) Male to Male Audio Cable. Electronics. Accessories & Supplies. My Cable Mart.
P: Soybu Women's Lena Drape-Front Wrap Cardigan Sweater. Sports & Outdoors. Sports & Fitness. Soybu.
Q: Pull Ties Reusable Bag Storage Sealer - Seal Bread, Cereal, Frozen, Plastic Bags Tight(original shorter length version). Home & Kitchen. Kitchen & Dining. Think Up...
R: Topeak Pocket Rocket Master Blaster Bike Pump. Sports & Outdoors. Outdoor Recreation. Topeak.
S: Ambesonne Watercolor Flower Decor Collection, Spring Flowers Wisteria Bokeh Background Painting, Bedroom Living Kids Girls Boys Room Dorm Accessories Wall Hanging Tapestry, Navy Purple Peach...
T: Monster 12 Pieces Small Replacement Eartips Earbuds for Monster Beats Dr. Dre Tour, Powerbeats, Diddybeats and Turbine Pro, Gratitude, Dna Victory, Isport Immersion, Inspiration, Claritymobile,...


assistant
Answer: R