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: IR Wireless Shutter Remote Control Compatible with Canon EOS 6D Mark II, 5D Mark IV III II, 5DS 5DR, 7D Mark II, 77D 6D 7D...
2nd: Parts Express 3.5mm Plug (4 Pole) To 3 RCA A/V Cable 6 feet. Electronics. Accessories & Supplies. LASUS.
3rd: Luxi For All - Smartphone Light Meter Attachment. Electronics. Camera & Photo. Extrasensory Devices.

Options:
A: Vanguard TRACKER-AP364 Aluminum Alloy Professional Monopod. Electronics. Camera & Photo. Vanguard.
B: Manfrotto 410 Junior Geared Tripod Head with Quick Release and a Bonus Ivation Quick Release Plate. Electronics. Camera & Photo. Manfrotto.
C: MyGift Aqua Blue Owl Design Ceramic Cooking Utensil Holder/Multipurpose Kitchen Storage Crock. Home & Kitchen. Kitchen & Dining. MyGift.
D: Tempered Glasslock Storage Containers 40pc set Green Lids Microwave & Oven Safe Airtight Anti Spill Proof. Home & Kitchen. Kitchen & Dining. GlassLock.
E: Wilton 2308-2014 Halloween Metal Cookie Cutter Tub. Home & Kitchen. Kitchen & Dining. Wilton.
F: GIFTCO 2021 Mini 1-Inch Polystone Ornaments 18-Pieces - Snowman, Angel & Santa. Home & Kitchen. Home Dcor. Giftco, Inc.
G: Flylinktech Bluetooth Wireless Keyboard with Leather Case Stand Cover iPad 1 2nd 3rd Generation ( Black ). Electronics. Computers & Accessories. KLAREN.
H: UGREEN Mini DisplayPort to HDMI Adapter Mini DP Male to HDMI Female Thunderbolt 2.0 to HDMI Adapter suitable for Apple MacBook Pro MacBook Air, Microsoft...
I: Neewer Deluxe 37mm Wide Angle Lens 0.45 X PROFESSIONAL HD + Deluxe 37mm Telephoto Lens 2 X PROFESSIONAL HD For ALL Cameras & Camcorders with...
J: puredown Premium Goose Down & Feather Mattress Pad Topper Queen. Home & Kitchen. Bedding. puredown.
K: Sony XT100HD HD Radio Tuner (Discontinued by Manufacturer). Electronics. Car & Vehicle Electronics. Sony.
L: Gold Cup Banana Board Cruzer. Sports & Outdoors. Outdoor Recreation. Gold Cup.
M: Lightweight Travel Umbrella-Windproof Waterproof Compact Umbrellas-Light Reflecting Material Safety Umbrella-Auto Open/Close-Anti UV-Easy Carrying ,Sturdy Durability Quality. Sports & Outdoors. Sports & Fitness. KAKALA.
N: LINKWELL 18" by 18" Happy Easter Bunny Colorful Egg Chic Burlap Cushion Covers (CC709). Home & Kitchen. Bedding. LINKWELL.
O: Muzee USB Internet Player & Recorder Radio, over 20,000 Internet Radio Stations. Electronics. Computers & Accessories. Muzee.
P: Dell Latitude E7440 14" LED Ultrabook - Intel Core i5 i5-4300U 1.90 GHz 4GB 500GB W7P. Electronics. Computers & Accessories. Dell.
Q: TOSCANA - a Picnic Time Brand Parlor Ice Cream Mixing/Serving Set. Home & Kitchen. Kitchen & Dining. TOSCANA - a Picnic Time brand.
R: Wasabi Power Canon LP-E6, LP-E6N Replacement (2 Batteries + Charger). Electronics. Camera & Photo. Wasabi Power.
S: Sona Stomach Sleeper Bed Pillow. Home & Kitchen. Bedding. Sona.
T: Calphalon 1948246 Signature Stainless Steel Covered Skillet, 10", Silver. Home & Kitchen. Kitchen & Dining. Calphalon.


assistant
Answer: R