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: F.Dorla Vintage Casual Canvas Leather Backpack Rucksack Bookbag Satchel Hiking Outdoor Bag. Sports & Outdoors. Outdoor Recreation. F.DORLA.
2nd: TruePower 40-0455 Aluminum Emergency Whistle/Survival Whistle with Keychain. Sports & Outdoors. Outdoor Recreation. TruePower.

Options:
A: ALPS Mountaineering Mystique 1.5 Tent Floor Saver. Sports & Outdoors. Outdoor Recreation. ALPS Mountaineering.
B: Wacom 13-Inch Cintiq 13HD Tablet - Screen Protector Anti-Glare 25% - MXH. Electronics. Camera & Photo. Photodon.
C: Pearl Izumi Men's Divide Glove. Sports & Outdoors. Outdoor Recreation. Pearl iZUMi.
D: Hallmark QX9169 Season's Treatings Cookie Tree Snowman Ornament. Home & Kitchen. Home Dcor. Hallmark.
E: FOUR-C Sugar Craft Supplies Silicone Lace Pad Decoration Mat for Baking Color Pink. Home & Kitchen. Kitchen & Dining. FOUR-C.
F: Bestcompu ®New CPU Cooling Fan for Dell inspiron 15R 17 17R 3521 3721 5521 5535 5721 5737 15-3521 15R-5537 15-3537 15RV 15R-5521 7H5H9 74X7K 074X7K...
G: BARSKA Gladiator Binocular with Ruby Lens. Electronics. Camera & Photo. BARSKA.
H: OUTAD 9pcs Camping Cookware and Pot Set Camping Stove for Outdoor Cooking BBQ Camping Backpacking. Sports & Outdoors. Outdoor Recreation. OUTAD.
I: Bed Sheet Fasteners WITH METAL ADJUSTERS Mattress Cover Holders Grippers Suspenders Straps Clips | Perfect Fitted Bed Sheet Fastening System - Black, 2-Pack (8 pcs)...
J: Sony BRAVIA XBR KDL-32XBR9 32-Inch 1080p 120Hz LCD HDTV. Electronics. Television & Video. Sony.
K: Gibson Soho Lounge Mosaic 16 Piece Dinnerware Set. Home & Kitchen. Kitchen & Dining. Gibson.
L: Fun Furnishings 55224 Toddler Flip Sofa, Zebra. Home & Kitchen. Furniture. Fun Furnishings.
M: iDOO. Home & Kitchen. Kitchen & Dining. iDOO.
N: Sterilite  2 pc Large Sink Set - Black. Home & Kitchen. Kitchen & Dining. STERILITE.
O: Targus Bluetooth Laser Mouse AMB03US. Electronics. Computers & Accessories. Targus.
P: EBL Pack of 4 Two-Way Radio Rechargeable Batteries 3.6V 1000mAh for Talkabout Motorola 53615 KEBT-071A KEBT-071-B KEBT-071-C KEBT-071-D. Electronics. Portable Audio & Video. EBL.
Q: World Jerseys Women's Hippy Chick Cycling Jersey. Sports & Outdoors. Outdoor Recreation. BDI Cycling Apparel.
R: CAMTOA Utility Tactical Waist Pack Deployment Bag Pouch Military Camping Hiking Bag Outdoor Bag. Sports & Outdoors. Sports & Fitness. CAMTOA.
S: High Power Mini Computer/ Desktop ATX Case/ PS3 PC Tower/ Name Brand Systems 500-Watt Internal PC Power Supply Unit with 80mm Cooling. Electronics. Computers &...
T: Pyramid America Ipanema Beach-Rio De Janeiro-Surfer, Photography Poster Print, 24 by 36-Inch. Home & Kitchen. Wall Art. Pyramid America.


assistant
Answer: R