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: Yu Shan 3 Shelf Folding Stackable Bookcase, Natural. Home & Kitchen. Furniture. Casual Home.
2nd: Winsome Wood 81140 Mission Home Office, Natural. Home & Kitchen. Furniture. Winsome Wood.

Options:
A: Carolina Cottage Folding Library Ladder Chair. Home & Kitchen. Furniture. Carolina Cottage.
B: Mk Collection 4pc Soft Silky Satin Solid Color Deep Pocket Sheet Set (King, Black). Home & Kitchen. Bedding. Satin.
C: Generic 2nd Hard Drive Hdd/Ssd Caddy Adapter for Dell Precision M4600 M4700. Electronics. Accessories & Supplies. Generic.
D: Night Vision Digital Camcorder. Electronics. Camera & Photo. Night Owl Optics.
E: Katia Instant Camera Accessories Bundle Compatible for Fujifilm Instax Mini 9 / Mini 8 Instant Film Camera. Including Camera Case, Album, Frame, Stickers, Strap, Filters,...
F: Samsung Wired Headsets for Galaxy S6/S6 Edge - Non-Retail Packaging - White. Electronics. Headphones. Samsung.
G: Westinghouse VR4090 40" 1080p LCD HDTV. Electronics. Television & Video. Westinghouse.
H: 3 Sachi Insulated Snacklets Lunch Snack Pouch Bag Wristlet Makeup Pouch (Black Damask). Home & Kitchen. Kitchen & Dining. Sachi.
I: Safavieh American Homes Collection Odessa Grey 5 Tier Bookcase. Home & Kitchen. Furniture. Safavieh.
J: Plantar Fasciitis Sock - Compression Heel/Arch Support, Foot Sleeve, Ankle Socks. Sports & Outdoors. Sports & Fitness. Pure Athlete.
K: Unique Ultra Cushion Gun Grip. Sports & Outdoors. Sports & Fitness. Unique.
L: Iomega Prestige 1 TB USB 2.0 Desktop External Hard Drive 34275. Electronics. Computers & Accessories. Iomega.
M: Mission Style 38 x 27.5 Inch Natural Folding / Stacking Bookcase, 27.5"W, NATURAL. Home & Kitchen. Furniture. Home Decorators Collection.
N: Israeli Special Forces Sayeret Rifle Sling For Shotgun AR15/M4/M16 with Punisher Logo (Black). Sports & Outdoors. Sports & Fitness. Zahal.
O: JOTO Premium Screen Protector Film HD Ultra Clear (Invisible) for ASUS MeMO Pad 10 Tablet (ME102A) with Lifetime Replacement Warranty (3 Pack). Electronics. Computers &...
P: Vimoksha white kichen towels, dish cloth, tea towels, hand towels, bar towels (13, White with Blue). Home & Kitchen. Kitchen & Dining. Vimoksha.
Q: XCSOURCE 5PCS IIC I2C Logic Level Converter Bi-Directional Module 5V to 3.3V TE291. Electronics. Accessories & Supplies. XCSOURCE.
R: Make Em Laugh Wake Up Kick Ass Repeat Wooden Sign. Home & Kitchen. Home Dcor. Make Em Laugh.
S: NcSTAR Mossberg 500/590 Shotgun Receiver Rail Mount, Black, Picatinny MSHRCVMOS. Sports & Outdoors. Sports & Fitness. NcSTAR.
T: Flash Drive 8GB, Memory Stick Pen Drive USB2.0 AreTop Cute Cartoon Miniature Doctor Robot Thumb Drives for Date Storage Gift for School Students Kids Children...


assistant
Answer: M