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 the items in options and predict the user's next purchase from the listed options by analyzing her historical purchases.

Input:
Purchase History:
1st: 2XU Men's Elite Compression Performance Sock. Sports & Outdoors. Sports & Fitness. 2XU.
2nd: Cooling Towel - Perfect Tool To Stay Cool, Keeps Your Body Cool - Cool Towel for Neck - Great for All Activities - Use As...
3rd: Serene Headband - Womens Headbands for Sport, Yoga, Fashion & Exercise. Teen Headbands - Amazing Colors for Awesome Style Material for Superior Comfort. Sports &...

Options:
A: Happy Valentine's Day Door Cover 30in. x 5ft Pkg/1. Home & Kitchen. Event & Party Supplies. Beistle.
B: High Fidelity 90 Watt Class T Mini Stereo Amplifier with Power Supply for Dayton Audio , Dual , Pioneer , Polk , Sony and Much...
C: eTECH Collection 20 Pack of Clear Plastic SD/SDHC/SDXC/MicroSD/MicroSDHC/MicroSDXC Memory Card Case Holder for SanDisk/Kingston/Transcend/Samsung Memory Card (Plastic Case Only, Memory Card Not Included) -- Shipping...
D: Shower Filter Frascio Showerhead Filter High Output Universal Shower Replaceable Multi Stage Filter Cartridge 10-15 Stage-Chrome (12-STAGE). Home & Kitchen. Kitchen & Dining. Frascio.
E: Adorox 50 Count Paper Food Tray, 2.5-Pound(Standard 4"x 6". Home & Kitchen. Kitchen & Dining. Adorox.
F: BUNN BX-D Velocity Brew 10-Cup Coffee Brewer, High Altitude. Home & Kitchen. Kitchen & Dining. BUNN.
G: Daisy Unisex Powerline 415 Pistol Kit. Sports & Outdoors. Sports & Fitness. Daisy.
H: Dual XDMA7650 240-Watt CD/MP3/WMA/USB/iPod 2-Step Motorized Receiver. Electronics. Car & Vehicle Electronics. Dual.
I: mDesign Plastic Portable Makeup Organizer Caddy Tote, Divided Basket Bin with Handle, for Bathroom Storage - Holds Blush Makeup Brushes, Eyeshadow Palette, Lipstick - Small,...
J: Incense Sandalwood, 120 Sticks in a Six Pack. HEM Brand, Hand Rolled in India. Home & Kitchen. Home Dcor. Hem Incense.
K: Tao xm2go Portable Satellite Radio Receiver with Home and Car Accessory Kits. Electronics. Car & Vehicle Electronics. TAO.
L: Philips Magnavox PM435S 4-Device Universal Remote Control (Discontinued by Manufacturer). Electronics. Accessories & Supplies. Philips Magnavox.
M: Hampton Nautical  Wooden Anchor Coasters with Rosewood Holder (Set of 6), 3". Home & Kitchen. Home Dcor. Hampton Nautical.
N: Emgreat Black Carbon Fiber Ultra Light Cycling Bike Bicycle Drink Water Bottle Holder Cage Rack 22g. Sports & Outdoors. Outdoor Recreation. Emgreat.
O: Freshware Meal Prep Containers [15 Pack] 3 Compartment with Lids, Food Containers, Lunch Box | BPA Free | Stackable | Bento Box, Microwave/Dishwasher/Freezer Safe, Portion...
P: Bar Serving Cart TRIBECCA Home Myra Rustic Mobile Kitchen (Brown). Home & Kitchen. Furniture. Bar Serving Cart.
Q: ITALIAN 100% Egyptian Cotton 2 Pc Bath Towel Set, IVORY. Home & Kitchen. Bath. Italian Collection.
R: Griffin, iPad mini 1/2/3 Case, Survivor CrossGrip, Protective Gaming Case with shoulder strap, Ergonomic, Rugged, Citron. Electronics. Computers & Accessories. Griffin Technology.
S: Over the Knee Compression Socks 15-20 mmHg Womens & Mens Thigh High Stockings by X31 Sports 1 Pair. Sports & Outdoors. Sports & Fitness. X31...
T: Easton HS7 Batting Gloves. Sports & Outdoors. Sports & Fitness. Easton.


assistant
Answer: S