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: Based on the user's historical purchases, rank the items in options and predict the next product of the user's interest from the provided options.

Input:
Purchase History:
1st: Slinger Digital Storage Aluminum Case for Eight SD/MMC Secure Digital Cards. Electronics. Accessories & Supplies. VidPro.
2nd: Nikon AF-S NIKKOR 35mm f/1.8G ED Fixed Zoom Lens with Auto Focus for Nikon DSLR Cameras. Electronics. Camera & Photo. Nikon.
3rd: SanDisk Extreme 128GB U3/UHS-I SDXC with 4K Ultra HD, up to 80MB/s Read; 60MB/s Write- SDSDXN-128G-G46 [Older Version]. Electronics. Computers & Accessories. SanDisk.

Options:
A: Sony DVP-FX730 7-Inch Portable DVD Player, Black. Electronics. Portable Audio & Video. Sony.
B: At Jabbas Mercy - Star Wars Return of the Jedi 2013 Hallmark Ornament. Home & Kitchen. Home Dcor. Hallmark.
C: Burton Women's Crystal Pullover. Sports & Outdoors. Outdoor Recreation. Burton.
D: Brooklyn Brew Shop Set of 50 Caps and Capper ACCAPR. Home & Kitchen. Kitchen & Dining. Brooklyn Brew Shop.
E: CaseCrown Bold Standby Case (Red) for 2012 Amazon Kindle Fire HD 7 Inch (Built-in magnet for sleep / wake feature). Electronics. Computers & Accessories. CaseCrown.
F: Fotodiox Pro Camera Kit for the Canon EOS M (EF-M) Digital Camera & Canon EF-M 18-55mm Lens; Includes - All Metal Camera Hand Grip with...
G: Extended Life Samsung SLB-07A Replacement Battery 1000MAH Each + 1 Hour Home & Car Charger For Samsung Dulaview TL220 TL225 TL90. Electronics. Camera & Photo...
H: Arkon Tripod Tablet Mount for iPad Air 2 iPad Pro iPad 4 3 2 Galaxy Note 10.1 Galaxy Tab Pro Retail Black. Electronics. Computers &...
I: MSR Hook Tent Stake Kit. Sports & Outdoors. Outdoor Recreation. MSR.
J: STM Blazer Padded Sleeve with Removable Carry Strap for Laptop. Electronics. Computers & Accessories. STM.
K: VILTROX JY-120-C1 wireless remote shutter release for Canon EOS camera 70D 60Da 60D T6s T6i T5i T3i T5 T3 1200D 760D 100D 550D 1100D. Electronics...
L: Crockpot 2 Unit Hook Up. Home & Kitchen. Kitchen & Dining. Crock-Pot.
M: iLifeTech Automatic Toothpaste Dispenser Hands Free Dental Cream Squeezer for Kids and Toothbrushes Holder Family Set. Home & Kitchen. Kids' Home Store. iLifeTech.
N: TRENDnet N300 Wireless High Power Easy-N Range Stand Alone Wi-Fi Extender, TEW-736RE. Electronics. Computers & Accessories. TRENDnet.
O: Benchmade Pardue 556 Mini-Griptilian Drop-Point AXIS Knife (Yellow) Bundle. Sports & Outdoors. Outdoor Recreation. Benchmade.
P: Monoprice 6-Feet USB 3.0 A Male to A Female Extension 28/24AWG Cable (Gold Plated) (106506). Electronics. Computers & Accessories. Monoprice.
Q: Phone Charger Cell phone Cable A01. Electronics. Home Audio. UltraSealers.
R: Tabletote Black Portable Compact Lightweight Adjustable Height Laptop Notebook Computer Stand. Electronics. Computers & Accessories. Table Tote.
S: Large Rainbow Abalone Seashell. Home & Kitchen. Home Dcor. Island Girl Products.
T: Grinder Kingz Aluminum 2.5 Inch 4-Piece Herb Grinder - Best Grinders On The Market. Home & Kitchen. Kitchen & Dining. Grinder Kingz.


assistant
Answer: R