Instruction: Given the products the user has purchased in history, rank the items in the listed options and output the item that the user is most likely to purchase next. Answer from one of the options.

Input:
1st: SOG Specialty Knives & Tools STGFSA-98  Flash II - 1/2 Serrated Aluminum Handle, Black TiNi. Sports & Outdoors. Outdoor Recreation. SOG.
2nd: Darn Tough Vermont Men's Coolmax Boot Cushion Hiking Socks. Sports & Outdoors. Outdoor Recreation. Darn Tough.
3rd: Darn Tough Hiker Micro Crew Cushion Socks - Men's. Sports & Outdoors. Outdoor Recreation. Darn Tough.

Options:
A: Tractiongrips grip overlay decal for Glock 29SF, 30SF, 30S pistols. Sports & Outdoors. Sports & Fitness. Tractiongrips.
B: Neewer 18 inches 75W 5500K Dimmable Fluorescent Ring Light for Camera Photo Studio Portrait Photography, Video, Selfie, Make-up (Only Light Included). Electronics. Camera & Photo...
C: UC Adjustable Stem 130mm x 1-1/8" x 25.4 threadless. Sports & Outdoors. Outdoor Recreation. Ultracycle.
D: Apple iPod shuffle 1 GB Green (2nd Generation)  (Discontinued by Manufacturer). Electronics. Portable Audio & Video. Apple.
E: Monoprice Keystone Jack - 3.5mm Stereo, Flush Type (White). Electronics. Accessories & Supplies. Monoprice.
F: Pico Macom CDA-1A Bi-Directional Amplifier with Active Return. Electronics. Television & Video. Pico Macom.
G: Dell UltraSharp U2515H 25-Inch Screen LED-Lit Monitor. Electronics. Computers & Accessories. Dell.
H: 15" Hummingbird Garden Melamine Handled Serving Tray. Home & Kitchen. Kitchen & Dining. SBF Gifts.
I: Texsport Fleece Sleeping Bag - Colors may vary. Sports & Outdoors. Outdoor Recreation. Texsport.
J: Bush Furniture Birmingham Executive Credenza. Home & Kitchen. Furniture. Bush Furniture.
K: BlackHawk Pistol Range Bag SPORTSTER Bag Black Nylon 74RB02BK. Sports & Outdoors. Sports & Fitness. BLACKHAWK!.
L: Xigmatek Desktop Computer Heatsink Cooling Fan LOKI SD963. Electronics. Computers & Accessories. Xigmatek.
M: Tea Fort233; Luci Loose Tea Infuser, White,. Home & Kitchen. Kitchen & Dining. Tea Forte.
N: Miccus Wireless Portable Bluetooth Transmitter & Receiver for 3.5mm Audio Devices, 2 in 1 Dongle, aptX Low Latency with NO DELAY for TV, Gaming, Stereo,...
O: Coodio® Universal 15.6 inch Laptop Sleeve Bag Case Pouch + Accessory Bag for Apple Macbook Pro Retina 15 (Fit most 15.6 inch ultrabook laptop) (Tan)...
P: Black Diamond Big Air XP Package. Sports & Outdoors. Outdoor Recreation. Black Diamond.
Q: Toshiba SD-V394 DVD/VCR Combo. Electronics. Television & Video. Toshiba.
R: Sun Zero Barrow Energy Efficient Patio Door Curtain Panel, 100" x 84", Paprika Red. Home & Kitchen. Home Dcor. Sun Zero.
S: C2G 25246 One HD15 VGA Male to Two HD15 VGA Female Y-Cable, Beige (8 Inches). Electronics. Accessories & Supplies. C2G/ Cables To Go.
T: Under Armour Girls' Perfect Headband. Sports & Outdoors. Sports & Fitness. Under Armour.
Answer: K