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: TheraBand FlexBar, Tennis Elbow Therapy Bar, Relieve Tendonitis Pain & Improve Grip Strength, Resistance Bar for Golfers Elbow & Tendinitis. Sports & Outdoors. Sports &...
2nd: TheraBand FlexBar, Tennis Elbow Therapy Bar, Relieve Tendonitis Pain & Improve Grip Strength, Resistance Bar for Golfers Elbow & Tendinitis. Sports & Outdoors. Sports &...
3rd: Pro Force ProForce Forearm Guard, Black. Sports & Outdoors. Sports & Fitness. Pro Force.
4th: Pro Force ProForce Forearm Guard, Black. Sports & Outdoors. Sports & Fitness. Pro Force.
5th: RDX Weight Lifting Reverse Hook Straps | Maya Hide Leather Wrist Grips for Powerlifting, Weightlifting, Bodybuilding, Strength Training & Workout | Great for Deadlift, Shrugs,...
6th: Fox Fierce Womens Weightlifting Gloves in Black or Pink plusFREE Padded Figure 8 Lifting Straps for Powerlifting and Heavier Weight plusFREE Fitness Workout for Women...
7th: Big Wall Traverse - UIAA Certified 25kn Aluminum Carabiners - Screw Lock, Straight Gate or Bent Gate. Sports & Outdoors. Outdoor Recreation. Big Wall.
8th: TheraBand FlexBar, Tennis Elbow Therapy Bar, Relieve Tendonitis Pain & Improve Grip Strength, Resistance Bar for Golfers Elbow & Tendinitis. Sports & Outdoors. Sports &...
9th: Gold Tip EZ- Pull 125 Grain Field Points (12-Pack). Sports & Outdoors. Sports & Fitness. Gold Tip.
10th: TheraBand FlexBar, Tennis Elbow Therapy Bar, Relieve Tendonitis Pain & Improve Grip Strength, Resistance Bar for Golfers Elbow & Tendinitis. Sports & Outdoors. Sports &...
11th: WOD Nation Muscle Floss Bands Recovery Band Tack Flossing Sore Muscles Increasing Mobility - Stretch Band Includes Carrying Case. Sports & Outdoors. Sports & Fitness...
12th: Darn Tough Coolmax Micro Crew Cushion Socks - Men's. Sports & Outdoors. Outdoor Recreation. Darn Tough.
13th: Darn Tough Hiker Micro Crew Cushion Socks - Men's. Sports & Outdoors. Outdoor Recreation. Darn Tough.
14th: Roseate Women's Body Shaper Hot Sweat Workout Tank Top Slimming Vest Tummy Fat Burner Neoprene Shapewear for Weight Loss, No Zipper, Black/Yellow. Sports & Outdoors...

Options:
A: Outdoor Research Men's Harrelson L/S Shirt. Sports & Outdoors. Outdoor Recreation. Outdoor Research.
B: New Star Foodservice 43259 Stainless Steel Bar Ice Scoop (Set of 2), Silver. Home & Kitchen. Kitchen & Dining. New Star Foodservice.
C: Inflatable Travel Neck Pillow Colors vary Gray or Dark Navy Blue. Home & Kitchen. Bedding. Productcorpqueen.
D: Nook HD 7 Keyboard Case - Poetic Nook HD 7 Case [KeyBOOK Series] - [Bluetooth Keyboard] PU Leather Protective Wireless Keyboard Folio Case for Nook...
E: JBL PRX418S Compact 18" Passive Subwoofer. Electronics. Home Audio. JBL Professional.
F: CAMVATE Cold Shoe Mount with 1/4''-20 Hole for Blackmagic Cinema Cameras. Electronics. Camera & Photo. CAMVATE.
G: TOAKS Titongs Set. Sports & Outdoors. Outdoor Recreation. TOAKS.
H: International Culinary Groovy Groover. Home & Kitchen. Kitchen & Dining. Chef Harvey.
I: Higo LED Waist Bag, USB Rechargeable Light Up Unisex Neon Fanny Pack with Pockets for Runner- Holds Similar Smartphones.  Higo.
J: Monster Cable ULT I600-8 THX Ultra 600 Audio Interconnect (Discontinued by Manufacturer). Electronics. Accessories & Supplies. Monster.
K: Spectrum Diversified Euro Banana Holder, Chrome. Home & Kitchen. Kitchen & Dining. Spectrum.
L: Innova - Champion Discs DX TeeBird Golf Disc (Colors may vary). Sports & Outdoors. Sports & Fitness. Innova - Champion Discs.
M: Zombie Hunter Gel Target, Multi Color.  Zombie Hunter.
N: 300 Count Holiday Ornament Hooks RED, GREEN OR SILVER. Home & Kitchen. Seasonal Dcor. Pride.
O: Frogg Toggs Pro Action Jacket, Advantage Max-4 Camo (Pa63102-55). Sports & Outdoors. Sports & Fitness. Frogg Toggs.
P: Medelco 12-cup Glass Stovetop Whistling Kettle. Home & Kitchen. Kitchen & Dining. CAF BREW COLLECTION.
Q: Kastar AC Adapter, Power Supply LCD 12V 5A 60W for Benq LCD Monitor FP2081 FP450 FP547 FP553 FP557 FP563 FP567 FP581 FP581 FP591 FP731, 5050...
R: Newmowa BLS-5 Replacement Battery (2-Pack) and Charger kit for Olympus BLS-5, BLS-50, PS-BLS5 and Olympus OM-D E-M10, Pen E-PL2, E-PL5, E-PL6, E-PL7, E-PM2, Stylus 1...
S: VF LSG Women's Intense Drive Hooded Full Zip Sweater. Sports & Outdoors. Fan Shop. VF LSG.
T: Rubbermaid Easy Find : Rubbermaid 50-piece Easy Find Lids Food Storage Set, Food Storage Containers. Home & Kitchen. Kitchen & Dining. Rubbermaid.


assistant
Answer: O