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: Altus Athletic Altus Cardio Club Step with 4-Risers. Sports & Outdoors. Sports & Fitness. Altus Athletic Mfg. Co.
2nd: LED Safety Light - Clip On to Stay Safe and Be Seen at Night - Great for Running, Walking, Kids, Dogs, Hiking, Camping or Bike...
3rd: LED Safety Light - Clip On to Stay Safe and Be Seen at Night - Great for Running, Walking, Kids, Dogs, Hiking, Camping or Bike...

Options:
A: Neewer 10 x 20FT / 3 x 6M PRO Photo Studio 100% Pure Muslin Collapsible Backdrop Background for Photography,Video and Televison (Background ONLY) - WHITE...
B: NcStar 3-9X40 Rubber AR15 Scope/Carry Handle Mount/Ruby Lens (SFRAQ3940R). Sports & Outdoors. Sports & Fitness. NcSTAR.
C: Trudeau Maison Set of 3 Mixing Bowls, Multicolor. Home & Kitchen. Kitchen & Dining. Trudeau.
D: GLS Audio 1/4" to Banana Plug Adapter Cables 6". 1/4 Inch TS Mono Female to Male Banana Cords - 6 Inch Gender Changer Cable -...
E: JoPilot White Stoneware Mug. Home & Kitchen. Kitchen & Dining. Highwave Inc.
F: HP JetDirect 620n Print Server (J7934A#UUS). Electronics. Computers & Accessories. Hewlett Packard.
G: Towle Living T8613200 Wave 20-Piece Stainless Steel Flatware Set, Service for 4. Home & Kitchen. Kitchen & Dining. Towle.
H: NFL Commemorative Championship Football, 9-Inches. Sports & Outdoors. Fan Shop. Gulf Coast Sales.
I: Set of 3, Multi Use Suction Cup Hooks, Mop & Broom Holders or Hangers, Power Lock, Up to 10 LB,Strong Suction,White, by NL HOME. Home...
J: Axiom Power Top Tube Bag . Sports & Outdoors. Outdoor Recreation. Axiom.
K: SLAPPA KIKEN Jedi Checkpoint Friendly 18 inch Gaming / Travel Laptop Bag, tons of storage, Ultimate Protection. Electronics. Computers & Accessories. Slappa.
L: iPad Pro 12.9 Case- Black Survivor Slim, Protective Case + Stand. Electronics. Computers & Accessories. Griffin Technology.
M: Men Tummy Control Hot Sweat Vest Slimming Sauna Shirt Neoprene Workout Weight Loss Sauna Vest. Sports & Outdoors. Sports & Fitness. NINGMI.
N: ZWILLING J.A. Henckels 34999-403 6-pc Glass Water Stone Sharpening Set, 16". Home & Kitchen. Kitchen & Dining. ZWILLING J.A. Henckels.
O: Longzang Baby Carriage Fondant Silicone Sugar Craft Mold, Mini, Pink. Home & Kitchen. Kitchen & Dining. Longzang.
P: Guard Dog Diablo Tactical Stun Gun Flashlight, Maximum Voltage, Ultra Bright LED Bulb, Rechargeable. Sports & Outdoors. Sports & Fitness. Guard Dog Security.
Q: MoKo Slim-Fit Cover Case Folio for Samsung Galaxy Tab 2 7.0, Carbon Fiber BLUE (with Built-in Multi-Angle Stand). Electronics. Computers & Accessories. MoKo.
R: Silicone Baking Cups Set of 12+1 No need for Paper Wrappers Reusable Non-stick Molds No BPA, Easy Release Cupcake Liners by My Baker’s Dozen 7...
S: NEW touch panel digitizer for Samsung Galaxy Tab 7.0 inch" T849 P1000 I987 I800 with free tools. Electronics. Computers & Accessories. TheCoolCube.
T: Proscan Portable Rugged Bluetooth Speaker, Black. Electronics. Portable Audio & Video. PROSCAN.
Answer: P