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: Wald W10252 Bicycle Training Wheels (16 to 20-Inch Wheels.75 and 1-Inch Frame Tubes). Sports & Outdoors. Outdoor Recreation. Wald.
2nd: Cressi Neoprene Mask Strap Cover. Sports & Outdoors. Outdoor Recreation. Cressi.
3rd: Jaws NEOkeeper Snorkel Retainer.  Just Add Water.
4th: Cressi Neoprene Mask Strap Cover. Sports & Outdoors. Outdoor Recreation. Cressi.
5th: SafeWays iPhone 7 plus Waterproof Case - Made From Special Crystal Clear Materials That Let You Operate Your Phone Under Water - Compatible With All...

Options:
A: TRENDnet Wireless N900 Mbps Dual-Band Gigabit Router, TEW-692GR. Electronics. Computers & Accessories. TRENDnet.
B: Barsony New Saddle Tan Western Style Leather Holster for Snub-Nose or 2" 22 38 357 41 44 Revolvers. Sports & Outdoors. Sports & Fitness. Barsony.
C: FN FNP FNX FNS 9 40 Leather Gun Holster LT RH IWB Black. Sports & Outdoors. Sports & Fitness. Pro Carry.
D: Aramith 2-1/4" Regulation Size Crown Standard Billiard/Pool Balls, Complete 16 Ball Set. Sports & Outdoors. Sports & Fitness. Aramith.
E: iQualTech Sports Earphones For Iphone - Dual Speaker/Driver Earphones With Microphone For Handsfree Calling And Remote Earphones. Electronics. Headphones. iQualTech.
F: Callaway Men's Big Bertha Alpha 815 Double Black Diamond Golf Driver. Sports & Outdoors. Sports & Fitness. Callaway.
G: Woll Diamond Plus/Diamond Lite Sauce Pan with Lid,  3.2-Quart. Home & Kitchen. Kitchen & Dining. Woll.
H: Walker Edison 42-Inch 4-in-1 TV Stand with Removable Mount, Cherry/Black. Home & Kitchen. Furniture. Walker Edison Furniture Company.
I: Room Darkening - Linen 27X64 Shade. Home & Kitchen. Home Dcor. Welcome Industrial.
J: Humminbird CC ICE Soft Sided Carrying Case for Flashers with No Shuttle. Electronics. GPS, Finders & Accessories. Humminbird.
K: Think Crucial 2 Replacements for Dirt Devil Style F22 & F26 Filter, Compatible With Part # 1LV1110000, Washable & Reusable. Home & Kitchen. Vacuums &...
L: Croquade U11001 Belgian Waffle Maker Bundle, includes Belgian Waffle Plate and Stuffed Waffle Plate (Discontinued by Manufacturer). Home & Kitchen. Kitchen & Dining. CROQUADE.
M: Mavic / Shimano Road Bike Wheel Set Mavic CXP22 700c Rims + FREE Continental Tires. Sports & Outdoors. Outdoor Recreation. Mavic.
N: Avenir Regular Schrader Valve Tube (16 x 1.75-2.125). Sports & Outdoors. Outdoor Recreation. Avenir.
O: DSTE DMW-BLC12 Battery + DC114 Travel and Car Charger Adapter for Panasonic Lumix DMC-G5 G6 G7 GH2 GX8 FZ200 DMC-FZ2500 DMC-FZ2000 Leica Q Camera as...
P: Moxeay Yoga Massage Toe Separator Socks. Sports & Outdoors. Sports & Fitness. Moxeay.
Q: Dell IN2030M 20-Inch Screen LED-lit Monitor (Discontinued by Manufacturer). Electronics. Computers & Accessories. Dell.
R: Ner Mitzvah Clear Cup Tea Light Candles - 50 Bulk Pack - White Unscented Travel, Centerpiece, Decorative Candle - 4.5 Hour Burn Time. Home &...
S: Etymotic Research ER20 ETY-Plugs Hearing Protection Earplugs, Large Fit, Blue Stem with White Tip (Discontinued by Manufacturer). Electronics. Headphones. Etymotic Research.
T: DynexTM - 6-Outlet Wall-Mount Surge Protector DX-6OUT. Electronics. Accessories & Supplies. Dynex.


assistant
Answer: D