Instruction: The user's purchase history implies her preferences. Rank the items in the options based on the user's preferences. Output the item that the user is most likely to purchase next from the options.

Input:
1st: Black Diamond Ultra Distance Trekking Pole (Carbon/Process Blue). Sports & Outdoors. Outdoor Recreation. Black Diamond.
2nd: Dry Pak Alligator Wallet. Sports & Outdoors. Sports & Fitness. Dry Pack.

Options:
A: Linksys E1550 Wireless-N Router with SpeedBoost. Electronics. Computers & Accessories. Cisco.
B: CyberHome CH-DVR 1500 Progressive-Scan DVD+R/+RW Recorder and Player , Silver. Electronics. Television & Video. Cyberhome.
C: Equinox Ultralite Pack Pocket. Sports & Outdoors. Outdoor Recreation. Equinox.
D: Linksys WRT54G-TM T-Mobile Hotspot Home Wireless Router. Electronics. Computers & Accessories. Cisco.
E: On The Edge Wolf Travel Mug, Stainless Lined Coffee Tumbler, 16-Ounce - Wolves Themed - Gift for Animal Lovers - Tree-Free Greetings 77001. Home &...
F: BCP Replacement Comfort Headband Cushion for Logitech G930 Headphone. Electronics. Accessories & Supplies. BCP.
G: Copper Turkish Coffee Espresso Ottoman Cup & Saucer (Antique Gold). Home & Kitchen. Kitchen & Dining. LaModaHome.
H: Blue Crane Digital Introduction to Nikon D600 Basic Controls  (zBC148). Electronics. Camera & Photo. Blue Crane Digital.
I: Body Solid ACH18 Ab Crunch Harness. Sports & Outdoors. Sports & Fitness. Body-Solid.
J: OCZ OCZ2RPR800C44GK PC2-6400 DDR2 800MHz Reaper HPC Edition CL4 4GB Dual Channel Kit. Electronics. Computers & Accessories. OCZ.
K: Magikuchen Premium Accurate Stainless Steel Set of 5 Colorful Measuring Spoons - comes with engraved US and Metric Sizes with Free Egg Separator perfectly used...
L: Logitech Cordless Desktop S510. Electronics. Computers & Accessories. Logitech.
M: SNOWHALE Ultra Lightweight Packable Day Pack Hiking Traveling Camping Backpack 0712. Sports & Outdoors. Outdoor Recreation. Snowhale.
N: All American Collection New 4pc Printed Modern Geometric Curtain Set for The Bedspread Coverlet Set (Curtain Set) (Cal King, Yellow). Home & Kitchen. Bedding. All...
O: Player Supreme Individual Golf Tube/Divider - Putter 2". Sports & Outdoors. Sports & Fitness. Player Supreme.
P: Crane USA Humidifiers - Ultrasonic Cool Mist Humidifier, Filter-Free, 1 Gallon, for Home Bedroom Baby Nursery and Office, Blue and White. Home & Kitchen. Heating,...
Q: Golf Pride New Decade MCC Grip Kit (13-Piece). Sports & Outdoors. Sports & Fitness. Golf Pride.
R: Unique Loom Serenity Solid Shag Collection Super Soft Micro Polyester Dark Gray Home Décor Area Rug (4' x 6'). Home & Kitchen. Home Dcor. Unique...
S: Coby TFDVD7751 7-Inch Tablet Portable Dual Screen DVD Player, Black. Electronics. Portable Audio & Video. Coby.
T: Onlineb2c High Quality Clear Soft TPU Transparent Gel Silicone Bumper Tab Case Skin Cover for Apple iPad air 2 iPad 6 9.7" (Green). Electronics. Computers...
Answer: M