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: Based on the user's historical purchases, rank the items in options and predict the next product of the user's interest from the provided options.

Input:
Purchase History:
1st: Yes4All Olympic Exercise Fitness Crossfit Gymnastic Rings with Flexible Buckles Quality, Designed to Withstand up to 2000 lbs. Sports & Outdoors. Sports & Fitness. Yes4All.
2nd: Yes4All Speed Agility Ladder with Carry Bag – Multi Choice: 8, 12, 20 Rung. Sports & Outdoors. Sports & Fitness. Yes4All.

Options:
A: For Nokia Lumia 521 (T-Mobile/MetroPCS) Blue Skin+Black Cover. Sports & Outdoors. Fan Shop. Aimo Wireless.
B: Peerless-AV Peerless Slimline SUF650P Ultra-Thin Flat Mount. Electronics. Accessories & Supplies. Peerless.
C: GikPal LED Bike Tail Light, USB Rechargeable Bicycle Tail Rear Light Fits on Bikes Helmets Backpacks, Set of 2. Sports & Outdoors. Outdoor Recreation. Gikpal.
D: Lighted Snowman Lace Curtain Panel. Home & Kitchen. Home Dcor. Collections Etc.
E: Mini Ceramic Wall Plates with Metal Hanger (Set of 3) (Love Never Fails). Home & Kitchen. Kitchen & Dining. Dicksons.
F: Mohawk Home Soho Fancy Trellis Geometric Lattice Printed Area Rug, 5'x7', Navy Blue. Home & Kitchen. Home Dcor. Mohawk Home.
G: 2 Pack Reusable Wine Bottle Protector Sleeve Travel Bag - Inner Skin with Tough Leak Proof Outside - Pack in Luggage and Suitcase - Accessory...
H: Laptop Keyboard Compatible For Ibm/lenovo Yoga 13 25202897 V-127920FS1-US Black. Electronics. Computers & Accessories. Generic.
I: 24 Pack Clear Plastic Shoe Storage Transparent Boxes Container for Shoes Closet Organization. Home & Kitchen. Storage & Organization. Fashion Beauty Factory.
J: Ceiling Mount Pull Up Bar for 8' Ceilings. Sports & Outdoors. Sports & Fitness. Ultimate Body Press.
K: Mossy Oak Stillwater Rimfire Case (Green with Black Trim, 40-Inch). Sports & Outdoors. Sports & Fitness. Mossy Oak Hunting Accessories.
L: Ultra Bright Rechargeable Camping Lantern, Built in Baterry LED Lantern, Emergency Lantern - Perfect for Backpacking - Tents - Auto - Home - Hiking, Camping,...
M: Yes4All Speed Agility Ladder with Carry Bag – Multi Choice: 8, 12, 20 Rung. Sports & Outdoors. Sports & Fitness. Yes4All.
N: ESWK-BRK Izula Gear Wallet Kit. Sports & Outdoors. Outdoor Recreation. ESEE.
O: Alpine Innovations Spudz HD Mitt TV Screen Cleaning Kit, Blue, Regular. Electronics. Camera & Photo. Alpine Innovations.
P: 3-Channel Cable Management Clips (Set of 12, Black) | Desktop Cord Holder, Cable Organizer | Squircle Design | Gadgetmine. Electronics. Accessories & Supplies. GadgetMine.
Q: Safavieh Chatham Collection CHT720C Handmade Dark Blue and Ivory Premium Wool Area Rug (8' x 10'). Home & Kitchen. Home Dcor. Safavieh.
R: GLS Audio 100 Feet Speaker Cable 16AWG Patch Cords - 100 ft 1/4 Inch to 1/4 Inch Professional Speaker Cables 100 Foot Black 16 Gauge...
S: Standard Down Alternative Bed Pillow - Fluffy Comfortable - Hypo-allergenic - 2 Pack - by Comfy Solutions. Home & Kitchen. Bedding. Comfy Solutions.
T: 1 X Seasons Tweetings 2012 Hallmark Ornament. Home & Kitchen. Home Dcor. Hallmark.


assistant
Answer: M