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: Bean Products Yoga Monster Mat - Extra Thick 1/4" - Extra Long 72" - 24" Wide - Non-Toxic - Premium Quality - SGS Certified -...
2nd: Beachbody INSANITY Sanity Check DVD Workout: An Introduction to INSANITY. Sports & Outdoors. Sports & Fitness. Beachbody.

Options:
A: VicTsing 2nd External CD Drive, USB Slim Portable CD-RW DVD-R Combo Burner Player Writer for Laptop Notebook PC Desktop Computer, Black. Electronics. Computers & Accessories...
B: 52mm Filter Kit,K&F Concept 6pcs 52mm Slim Lens Filter Kit UV Filter + FLD Filter + Graduated Color Filter Lens Filter Set for DSLR Cameras...
C: Puget Systems Universal Acrylic GPU Brace. Electronics. Computers & Accessories. Puget Systems.
D: Le Petit Sports - Mini Basket Ball Hoop Set with Ball - 18-inch. Sports & Outdoors. Sports & Fitness. Le Petit Sports.
E: Eberlestock X2 Hunting BagPack. Sports & Outdoors. Sports & Fitness. Eberlestock.
F: OutSmart Neck Pillow for Travel. Home & Kitchen. Bedding. OutSmart.
G: Eleduino Raspberry Pi 2 Model B Quad Core and Raspberry Pi Model B+ (B PLUS) Sliver ABS Case Enclosure Box+Heatsink Kit. Electronics. Computers & Accessories...
H: Razor E90 Electric Scooter. Sports & Outdoors. Outdoor Recreation. Razor.
I: Gizmo Dorks 2-Tone PU Leather Book Folio Case Cover w/ Stand for Samsung Galaxy Tab 4 7.0 Inch SM-T230 T231 T235 (Brown). Electronics. Computers &...
J: Bekith Good Grips Stainless Steel Balloon Whisk, Egg Frother, Milk & Egg Beater Blender, Set of 3. Home & Kitchen. Kitchen & Dining. Bekith.
K: Triple Defender Layer Impact Hard Case Black w/ Screen Savers for Apple iPod Touch iTouch 4G 4th Generation. Electronics. Portable Audio & Video. Pro-Tek.
L: Noritake 4-Inch Colorwave Bowl, Graphite, Set of 4. Home & Kitchen. Kitchen & Dining. Noritake.
M: Pavilion Gift Company 03017 Sister Ornament/Angel Figurine, 4-1/2-Inch. Home & Kitchen. Home Dcor. Pavilion Gift Company.
N: Sport-Brella Mini Chair - 360 Degree Sun Protection for Kids. Sports & Outdoors. Outdoor Recreation. Sport-Brella.
O: Bean Products Yoga Monster Mat - Extra Thick 1/4" - Extra Long 72" - 24" Wide - Non-Toxic - Premium Quality - SGS Certified -...
P: Feel Fragrance Reed Diffuser Sticks Replacement Rattan 12 X 0.12 Inches Brown (60pcs. Home & Kitchen. Home Dcor. Scents and Feel.
Q: Marinex 7-Inch Fluted Small Round Pie Pan. Home & Kitchen. Kitchen & Dining. Marinex.
R: Esbit Emergency Stove. Sports & Outdoors. Outdoor Recreation. Esbit.
S: Lekue Macaron Kit with Decomax Pen and Baking Sheet. Home & Kitchen. Kitchen & Dining. Lekue.
T: Fitbit Charge Fastener Ring, HWHMH 12pcs Silicon Fastener Ring with 3pcs Clasp for Fitbit Charge Wristband - Fix the Clasp Fall Off Problem - (Note:...


assistant
Answer: O