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: SanDisk iXpand 64GB OTG Flash DriveWith Lightning connector For iPhones, iPads & Computers- SDIX-064G-G57. Electronics. Computers & Accessories. SanDisk.
2nd: iPad Air Smart Cover - Pink. Electronics. Computers & Accessories. Apple.

Options:
A: Gumball Machine - The Classy Way to Dole Out Snacks. Home & Kitchen. Kitchen & Dining. Godinger.
B: GMYLE 4 in 1 Bundle Soft-Touch Frosted Hard Case for Macbook Pro 13 inch with CD-ROM (Model: A1278) with Keyboard Cover, Screen Protector, Sleeve -...
C: DJI OSMO Starters Bundle. Electronics. Camera & Photo. DJI.
D: Etymotic Research ER23-HF3-BLACK-I HF3 In-Ear Headset with 3-Button Remote Control for iPod, iPhone, iPad (Black). Electronics. Headphones. Etymotic Research.
E: Yes4All 6 Pack Beer Belt with Buckle – Camo Beer Holster Belt for Party, Picnic, Camping – Soda and Beer Can Belt (Camouflage). Home &...
F: 100 x Double Slimline CD Jewel Boxes with Dark Grey / Black Pivot Tray #CD2R10DG (HOLDS 2 CDS IN THE SPACE OF ONE STANDARD SIZED...
G: SmartGuard 3- Year Desktop Protection Plan ($800-$900). Electronics. Electronics Warranties. SmartGuard.
H: ZenStrength Hand Exerciser - Grip, Forearm Wrist Strengthener - Squeeze & Flex Finger Extension Trainer Therapy Stress Ball Training, Physical Rehabilitation Relief - Women Men...
I: Vantec USA NexStar SE Dual 2.5-Inch SATA Hard Drive Rack with Memory Card Reader and USB 2.0 Ports (MRK-525CRU2). Electronics. Computers & Accessories. Vantec USA.
J: Handheld Vacuum Sealer for Food. Home & Kitchen. Kitchen & Dining. TadaChef.
K: Bose Rough In Kit for Virtually Invisible 191 Speakers (Pair). Electronics. Home Audio. Bose.
L: Qaba Kids Plush Rocking Horse-Style Bumble Bee Theme Chair. Home & Kitchen. Furniture. Qaba.
M: Adorable `Pachy Princess` Baby Elephant `Welcome` Sign Home Decor. Home & Kitchen. Home Dcor. Things2Die4.
N: Soft Silky Satin Solid Purple 4pc Deep Pocket Sheet Set for California-cal King Bed. Home & Kitchen. Bedding. Chezmoi Collection.
O: 1500 Thread Count Egyptian Quality Solid Duvet Cover Set, 3pc Luxury Soft, All Sizes & Colors, (Full/ Queen, Khaki). Home & Kitchen. Bedding. Grand Linen.
P: BRYO 2 Pairs of Premium Quality 18" Wrist Wraps for Women and Men - 1 Heavy Duty and 1 Extra Heavy Duty - for Weightlifting...
Q: Le Creuset of America Revolution Bi-Material Saute Spoon, Cerise (Cherry Red). Home & Kitchen. Kitchen & Dining. Le Creuset.
R: iPad Air 2 9.7'' Clear case,Asgens Transparent Soft TPU Case for iPad Air 2 iPad 6 9.7 inch. Electronics. Computers & Accessories. Asgens.
S: InterDesign Kent - Tall Trash Can for Bathroom, Kitchen or Office - Silver - 9.5 x 12 inches. Home & Kitchen. Storage & Organization. InterDesign.
T: 3 x Headphone Adapter with Black Jack Cover for iPhone 4/4S LifeProof Cases. Electronics. Accessories & Supplies. Granix.


assistant
Answer: R