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: Tru-Spec Men's Lightweight 24-7 Pant. Sports & Outdoors. Outdoor Recreation. Tru-Spec.
2nd: Converse Chuck Taylor All Star Low Top. Sports & Outdoors. Fan Shop.
3rd: GoFit Massage Bar 18". Sports & Outdoors. Sports & Fitness. GoFit.

Options:
A: Grace Digital GDI-BTAR512 100-Watt Digital Integrated Stereo Amplifier with Built-In AptX Bluetooth Wireless Receiver (Black). Electronics. Home Audio. Grace Digital.
B: Ashley Furniture Signature Design - Frandelli End Table - Accent Side Table - Square - Glass Top with Chrome Finish. Home & Kitchen. Furniture. Signature...
C: Bianchi 7960 BSK Black Sam Browne Belt with Chrome Buckle. Sports & Outdoors. Sports & Fitness. Bianchi.
D: Walker Edison Solid Wood Twin Bunk Bed, Cherry. Home & Kitchen. Furniture. Walker Edison Furniture Company.
E: CorningWare Etch 2.5 quart Oblong Dish with Glass Cover in Sand. Home & Kitchen. Kitchen & Dining. CorningWare.
F: ilauke Universal Cellphone Telescope Photo Adapter- Work with Binocular Monocular Spotting Scope Microscope or Any Point-and-Shoot Digital for iPhone 6/6 Plus Samsung HTC MOTO etc...
G: Ball Bearing Swivels 100% Copper High Strength Stainless Steel Ball Bearing Swivel, Solid Welded Rings Fishing Tackle Swivels Connectors Saltwater Fishing. Sports & Outdoors. Sports...
H: Tervis 1056775 Auburn Tigers Tumbler with Emblem and Orange Lid 16oz Mug, Clear. Sports & Outdoors. Fan Shop. Tervis.
I: Linksys AC1600 Wi-Fi Router Bundled with N600 Wireless Dongle (Refurbished). Electronics. Computers & Accessories. Linksys.
J: SanDisk Genuine Clip SPORT In-Ear Headphones - Black Earbuds Earphones for Clip Sport Jam Sansa Other MP3 Players. Electronics. Headphones. SanDisk.
K: Hyde 46445 Paint Can Opener, Chrome. Home & Kitchen. Kitchen & Dining. Hyde.
L: MEE Audio RX18 Comfort-Fit in-Ear Headphones with Enhanced Bass (White). Electronics. Headphones. MEE audio.
M: Microsoft Surface Ethernet Adapter 3.0. Electronics. Computers & Accessories. Microsoft.
N: Joyce Chen 90-5190 Big Bowls for Two Noodle Bowl Set, Matte Black. Home & Kitchen. Kitchen & Dining. Joyce Chen.
O: 3 In One Silicone Cooking Set: Cheese Melting Dome, Bowl, 9" Cake Mold, Nonstick Silicone baking cooking molds (1). Home & Kitchen. Kitchen & Dining...
P: Poo-Pourri Merry Spritzmas Vanilla Peppermint Scent 4 oz Before-You-Go Bathroom Spray. Home & Kitchen. Home Dcor. Poo-Pourri.
Q: The Stadium Chair Co. Deluxe Wide Model Gamechanger Stadium Chair. Sports & Outdoors. Sports & Fitness. The Stadium Chair Company.
R: Black SumacLife Outdoors Sport Armband Case For Samsung Galaxy Note Edge / Samsung Galaxy Note Edge / Samsung Galaxy Note 3 / Samsung Galaxy S5,...
S: RUNFast/Max 12lbs-140lbs Adjustable Weighted Vest. Sports & Outdoors. Sports & Fitness. RUNFast/Max.
T: Griffin AirStrap for iPad 2, Black (GB02505). Electronics. Computers & Accessories. Griffin.


assistant
Answer: S