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: Sony MDR-EX71SLA Fontopia Bud-Style Headphones with Case (Black) (Discontinued by Manufacturer). Electronics. Headphones. Sony.
2nd: Cisco-Linksys WRT160N-RM Wireless-N Router. Electronics. Computers & Accessories. Linksys.

Options:
A: Avanti Open Box WDP75 Hot And Cold Water Dispenser - White. Home & Kitchen. Kitchen & Dining. Avanti.
B: Sony Cybershot DSCW55 7.2MP Digital Camera with 3x Optical Zoom (Pink) (OLD MODEL). Electronics. Camera & Photo. Sony.
C: Lock&Lock BPA Free Rectangular Stackable Container Set with Silicone Sealing and Interlocking Flaps, 3-Piece, 2-1/2-Cup, 20 Fluid Ounce. Home & Kitchen. Storage & Organization. LOCK...
D: ICONNTECHS IT Full HD 1080P Sport Action Camera WiFi FHD 60 fps HDMI 14MP 170 Degree Wide Viewing Angle 2.0 Inch LCD Waterproof DV Camcorder...
E: Adafruit USB Audio Adapter - Works with Raspberry Pi [ADA1475]. Electronics. Accessories & Supplies. Adafruit.
F: C4 Labs Zebra Case - Raspberry Pi3, 2, B+ and 2B (Solid top Walnut) with Heatsinks ~ C4Labs. Electronics. Computers & Accessories. C4 Labs.
G: Stereo Sound on the Go - Purple Philips Portable Speaker - Pocket-sized and Powerful - 40 Hours of Continuous Play for Worry-free Enjoyment. Electronics. Portable...
H: Malibu Landscape Replacement LED Light T10 194 Wedge 5 x LED Cool White 6000K 12V AC/DC (12). Home & Kitchen. Seasonal Dcor. Sago.
I: Linon Claire Bench, Damascus. Home & Kitchen. Furniture. Linon.
J: Moleboxes Universal Foldable Keyboard Portable Wireless Bluetooth 3.0 Keyboard with Kickstand Stand Holder for Apple iPad Pro,iPad Mini, iPhone Smartphone, Android, Windows and Tablets (Black)...
K: Sony BDP-S590 3D Blu-ray Disc Player with Wi-Fi (Black) (2012 Model). Electronics. Television & Video. Sony.
L: Alex Orthopedic - 1002-SB - Cervical Neck Roll Pillow Case Only - Beige Satin - Set of Two. Home & Kitchen. Bedding. Alex Orthopedic Inc.
M: Concept2 Model E Indoor Rowing Machine. Sports & Outdoors. Sports & Fitness. Concept2.
N: Rubbermaid 7E59RDCHILI MixerMate Pitchers--3 QT - Random Colors. Home & Kitchen. Kitchen & Dining. Rubbermaid.
O: dCables Nikon D5500 USB Cable - USB Computer Cord for D5500. Electronics. Computers & Accessories. dCables.
P: Department 56 Snowbabies Kitten Carrier Hanging Ornament, 2.95 inch. Home & Kitchen. Home Dcor. Department 56.
Q: Dell Inspiron i3847-3384BK Desktop (Intel Pentium G3240 3.1GHz Processor, 4GB DDR3 RAM, 1TB Hard drive, Windows 7 Professional 64- Bit). Electronics. Computers & Accessories. Dell.
R: iKross 3.5mm Stereo Audio Headphone Male to Female Extension Cable - 6 Feet. Electronics. Accessories & Supplies. iKross.
S: Manual Coffee Grinder By Lavorato. Quality Stainless Steel with Simple Adjustable Ceramic Burrs. Lightweight Portable Hand Coffee Mill, Aeropress Compatible. Sleek, Quiet, Easy to Operate...
T: GoWISE USA 2.75-Quart Digital Air Fryer + 50 Recipes for your Air Fryer Book (Black). Home & Kitchen. Kitchen & Dining. GoWISE USA.


assistant
Answer: R