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:
1st: Cocoweb ArmBar Heavy Duty Alloy Steel Anti-theft Bicycle U-Lock - SLAB-BK. Sports & Outdoors. Outdoor Recreation. Newtion.
2nd: Adept Sound Ear Plugs (Blue) Noise Cancelling For Sleeping, Concerts, Music Events, Shooting Range, Construction Work, Reusable Soft Hypoallergenic Silicone Material, Comfortable Earplugs. Sports &...

Options:
A: APC 1000VA UPS with Automatic Voltage Regulation (BX1000) (Discontinued by Manufacturer). Electronics. Computers & Accessories. APC.
B: IOGEAR MediaShair Wireless Hub with SD/USB Input and Built-in Power Station, GWFRSDU. Electronics. Computers & Accessories. IOGEAR.
C: Hypoallergenic Comforter Set with Pillow Shams - 3 Piece - Decorative Pinch Pleat Pintuck - Wrinkle Resistant Microfiber with Lightweight Goose Down Alternative Fill -...
D: Panasonic Lumix DMC-GH3K 16.05 MP Digital Single Lens Mirrorless Digital Camera with 3-Inch OLED - Body Only (Black). Electronics. Camera & Photo. Panasonic.
E: AquaTeak Patented Sula Angled Teak Towel Stand. Home & Kitchen. Bath. AquaTeak.
F: Pioneer SEMJ591 Headphones. Electronics. Headphones. Pioneer.
G: Avenir Regular Schrader Valve 700c Tube (700x25-35 27x1-1/4). Sports & Outdoors. Outdoor Recreation. Avenir.
H: 123 Copy Dvd Gold. Electronics. Accessories & Supplies. Navarre.
I: 2.2" 4pc Tobacco Spice Herb Grinder Black. Home & Kitchen. Kitchen & Dining. Generic.
J: Opteka CXS-1 Video Shoulder Stabilizer Support System with CBW-1 Counterweight and CXSB-1 Shoulder Strap Belt. Electronics. Camera & Photo. Opteka.
K: Allen Sports Deluxe 2-Bike Trunk Mount Rack. Sports & Outdoors. Outdoor Recreation. Allen Sports.
L: Steel Mini Portable Personal Pocket Ashtray Keychain. Home & Kitchen. Storage & Organization. Genesis.
M: Cable Clamp - 100 pack (5/16 inch, Black). Electronics. Accessories & Supplies. Secure Cable Ties.
N: Archangel Saint St Michael Gabriel Uriel Raphael Figurines 4 Piece Statue SET Chapel Decoration. Home & Kitchen. Home Dcor. Religious Gifts.
O: New Digitizer Touch Screen Panel For RCA RCT6773W22 7 Inch Tablet PC. Electronics. Computers & Accessories. Atabletparts.
P: Fobus RBT17 Paddle Gun Holster. Sports & Outdoors. Sports & Fitness. Fobus.
Q: Logitech MK270 Wireless Keyboard and Mouse Combo - Keyboard and Mouse Included, 2.4GHz Dropout-Free Connection, Long Battery Life (Frustration-Free Packaging). Electronics. Computers & Accessories. Logitech.
R: Two Halcyon 1400 mAH Lithium Ion Replacement Battery for Pentax D-Li109 and Pentax K-r and Pentax K-30 Digital SLR Cameras. Electronics. Camera & Photo. Halcyon.
S: Aduro - Apple Certified/MFi - (6 Feet, 2 Meters) USB to Lightning Charge & Sync Cable fits All Apple Devices with Lightning Connector (Fiber Black)...
T: Prestige Home Fashion Wide Width Thermal Insulated Blackout Curtain - Back Tab / Rod Pocket - Black - 76"W x 96"L, 1 Panel. Home &...
Answer: K