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 items in listed options based on the user's purchase history to determine the item that the user is most likely to purchase next. Output the item with the highest likelihood of being the next purchase.

Input:
Purchase History:
1st: Panasonic RPDJS400R Headphones. Electronics. Headphones. Panasonic.
2nd: Skullcandy Agent (Discontinued by Manufacturer). Electronics. Headphones. Skullcandy.
3rd: Directv wb68 Dtv 6x8 Switch for HD Antenna. Electronics. Accessories & Supplies. DIRECTV.

Options:
A: Farsail Video Audio Converter Video Converter (FSH2C). Electronics. Accessories & Supplies. FarSail.
B: PLEMO Magic Cube Rechargeable Portable Bluetooth Wireless Speaker with 3.5mm Audio Port for iPhones, iPads, Android Cell Phones, Touch Screen Tablets, MacBooks, Laptop Computers, MP3...
C: SHENNOSI CS918 Android 4.4 TV Box Player RK3188T Quad Core 1GB/8GB WiFi Smart TV Box WiFi 1080P Media Player with Remote Control US Plug. Electronics...
D: Belkin PureAV AV21000-03 3-Foot Component Video Cable. Electronics. Accessories & Supplies. Belkin.
E: Smiling Hosts Firewood Log Carrier - Heavy Duty Log Tote Bag with Handles - Best Canvas Bag for Carrying Wood for Your Fire. Home &...
F: Espresso Full Mate’s Platform Storage Bed with 6 Drawers. Home & Kitchen. Furniture. Prepac.
G: Household Essentials C1217-1 Glidez Sliding Organizer - Pull Out Cabinet Shelf - Chrome - 11.5 Inches Wide. Home & Kitchen. Kitchen & Dining. Household Essentials.
H: Cosmos 3 PCS of Reflective Snap Pop Band Bracelets Pant Cuff Strap for Cycling / Bike / Running / Walking. Sports & Outdoors. Outdoor Recreation...
I: Winage Earbuds Bluetooth Wireless Headphones, 0.14 oz, Black. Electronics. Headphones. Winage.
J: Core Bamboo 3-Part Square Entertainment Set, Natural/White. Home & Kitchen. Kitchen & Dining. Core Bamboo.
K: Corona Extra Galvanized Beer Bucket. Home & Kitchen. Kitchen & Dining. Corona.
L: Cable Matters 100 Self-Locking 12-Inch Nylon Cable Ties in Black & White. Electronics. Accessories & Supplies. Cable Matters.
M: Tall Storage Cabinet with 4 Doors Pantry Cupboard Has Two Adjustable Shelves and One Fixed Shelf. Guaranteed. Kitchen Cabinets Store Cookbooks and Pantry Goods. Use...
N: Amplifier, Cable TV RF Broadband 15dB Gain One Output 5-1002Mhz w/ Power Adapter. Electronics. Accessories & Supplies. ANTRONIX MRA Series.
O: Think Tank Photo Lens Changer 25 V2.0 Lens Case (Black). Electronics. Camera & Photo. Think Tank.
P: Laser Engraved Enhanced Trigger Guard - Death - Velox Mortis. Sports & Outdoors. Sports & Fitness. Molon Labe Engraving.
Q: VMC 9626PS#3/0C O'Shaugnessy 3/0 Permasteel Treble Hooks, 25-Pack. Sports & Outdoors. Sports & Fitness. VMC Corporation.
R: (Old Model) WD My Passport Ultra 2 TB Portable External USB 3.0 Hard Drive with Auto Backup, Black. Electronics. Computers & Accessories. Western Digital.
S: Maxtor OneTouch 4 Lite 250 GB 3.5" USB 2.0 External Hard Drive. Electronics. Computers & Accessories. Maxtor.
T: StealStreet SS-G-91148, Fairy Collection Green Pixie Desk Decoration Figurine Collectible. Home & Kitchen. Home Dcor. StealStreet.


assistant
Answer: R