Task: Sequential_Recommendation
Instruction: Rank the items in options and predict the user's next purchase from the listed options by analyzing her historical purchases.

Input:
1st: SiteLite Mag Laser Boresighter. Sports & Outdoors. Sports & Fitness. SiteLite.
2nd: Vortex Optics Sparc II Red Dot Sight - 2 MOA Dot. Sports & Outdoors. Sports & Fitness. Vortex Optics.
3rd: Everlast Pro Style Training Gloves. Sports & Outdoors. Sports & Fitness. Everlast.
4th: Everlast Pro Style Training Gloves. Sports & Outdoors. Sports & Fitness. Everlast.

Options:
A: Diptyque Baies Room Spray. Home & Kitchen. Home Dcor. Diptyque.
B: Autom Clergy/Priest Short Sleeve Shirt.  Autom.
C: Jensen CD540 Portable Stereo Compact Disc Cassette Recorder with AM/FM Radio. Electronics. Portable Audio & Video. Jensen.
D: 100FT Weight Forward Floating (4F,5F,6F,7F,8F) Fly Fishing Lines Orange, Blue, Yellow,Green. Sports & Outdoors. Sports & Fitness. BlitzBite.
E: RiteAV - 4 x HDMI and 1 x Ethernet Cat5e and 1 x Coax Cable TV F Type Port Wall Plate - White. Electronics. Accessories...
F: WINNING Knuckle Guards Ng2. Sports & Outdoors. Sports & Fitness. WINNING.
G: Pro Tool Industries 481 Woodman's Pal Classic Fixed Blade Knife. Sports & Outdoors. Sports & Fitness. Pro Tool Industries.
H: USB Printer Cable 25 ft- USB 2.0 Scanner Lead Gold Plated Type A to B Male Printer Scanner Cord Compatible for Canon, Epson, HP, Lexmark,...
I: Visionboard2 Large Key Keyboard - Keyboard - USB - Black, White. Electronics. Computers & Accessories. Chester Creek.
J: Gridseed ASIC Miner for Litecoin and Bitcoin Mining. Electronics. Computers & Accessories. BuyAHash.
K: Midwest Industries Ruger 10/22 Scope Mount, Black. Sports & Outdoors. Sports & Fitness. Midwest Gloves.
L: Griffin iFM (Dock Connector) / FM Radio and Wired Remote Control for iPod. Electronics. Portable Audio & Video. Griffin Technology.
M: Kitchen Basics Heavy Duty Nut Cracker Tool; Fully Adjustable, Easy and Fast, Made with Solid Steel. Home & Kitchen. Kitchen & Dining. FW.
N: Bluetooth Speaker,Gaosa Small Steel Gun Metal Speaker, Mini Portable Wireless Stereo Speaker for Phone Card. Electronics. Home Audio. Gaosa.
O: EVOLVA FUTURE TECHNOLOGY T38 IR 38mm Lens Infrared Flashlight Light Night Vision Torch - Infrared Light is Invisible to Human Eyes - to be Used...
P: Canon EF 35mm f/2 Wide Angle Lens for Canon SLR Cameras (OLD MODEL). Electronics. Camera & Photo. Canon.
Q: Prestige Safety Valve for Deluxe, Deluxe Plus & Alpha Deluxe Stainless Steel Pressure Cookers. Home & Kitchen. Kitchen & Dining. Prestige.
R: 120mm Anti-Vibration Rubber Fan Gasket - Black (2-Pack). Electronics. Computers & Accessories. OKGEAR.
S: Tank, Clean Water/Solu- Tion Fh40010/Floormate. Home & Kitchen. Vacuums & Floor Care. Hoover.
T: Yurbuds Inspire 300 In-Ear Earphones. Electronics. Headphones. Yurbuds.
Answer: F