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

Input:
1st: UPPERCASE UPPERCASE Premium Keyboard Protector for MacBook Air 11" (2010 or newer)(UPP-PKBC-A11). Electronics. Computers & Accessories. UPPERCASE.
2nd: Kuzy 13-inch PALMREST with Trackpad Sticker for Older MacBook Pro 13.3" Model: A1278 Aluminum Unibody Skin Protector Cover Silver. Electronics. Computers & Accessories. Kuzy.
3rd: Logitech M325c Wireless Optical Mouse Marc Monkey. Electronics. Computers & Accessories. Logitech.
4th: Logitech M325c Wireless Mouse Facets 910-004445. Electronics. Computers & Accessories. Logitech.
5th: MacBook Old Non Retina Pro 13 Case, GMYLE Plastic Hard Case Cover Matte Color for Old MacBook Pro 13 inch with CD-ROM (Model: A1278) [2009-2014...
6th: Wireless Security Camera, UOKOO 1080P 2 Megapixel HD Home WiFi Wireless Security Surveillance Camera with Motion Detection Pan/Tilt, 2 Way Audio and Night Vision Baby...
7th: Wasabi Power Battery for GoPro HERO3, HERO3+ and GoPro AHDBT-201, AHDBT-301, AHDBT-302 (1280mAh). Electronics. Camera & Photo. Wasabi Power.
8th: Elgato Game Capture HD - Xbox and PlayStation High Definition Game Recorder for Mac and PC, Full HD 1080p. Electronics. Computers & Accessories. Corsair.
9th: GoScope Extreme - Telescoping Pole/Monopod: Expands 17" out to 37" for GoPro Hero4. Electronics. Camera & Photo. GoScope.
10th: Kuzy 13-inch PALMREST with Trackpad Sticker for Older MacBook Pro 13.3" Model: A1278 Aluminum Unibody Skin Protector Cover Silver. Electronics. Computers & Accessories. Kuzy.
11th: (Old Model) WD My Passport Ultra 2 TB Portable External USB 3.0 Hard Drive with Auto Backup, Black. Electronics. Computers & Accessories. Western Digital.
12th: GoPro Protective Lens (GoPro Official Accessory). Electronics. Camera & Photo. GoPro.
13th: Western Digital Protective Carrying Case for My Passport Portable Hard Drives WDBABL0000NSL-WASN (Black). Electronics. Computers & Accessories. Western Digital.
14th: Mopar JEEP WRANGLER JK KICKER SPEAKER UPGRADE. Electronics. Car & Vehicle Electronics. Mopar.
15th: Mount-It! MI-757 Monitor Desk Stand for Single LCD, LED Screen Adjustable Height, Tilting, Rotating, Mounts 17, 20, 24, 27, 30 Inch Samsung, HP, LG, Acer,...
16th: GoPro Suction Cup Mount (GoPro Official Mount). Electronics. Camera & Photo. GoPro.
17th: Waterproof Camera Float (2-pack) Floating Strap for Underwater GoPro, Panasonic Lumix, Nikon AW110, Canon D20 & D30, Fujifilm, Olympus Tough - Floats Your Device -...
18th: 3x Canon Rebel SL1 (EOS 100D) camera Premium Clear LCD Screen Protector Cover Guard Shield Protective Film Kit (3 pieces by GUARMOR). Electronics. Camera &...
19th: Wasabi Power Battery (2-Pack) and Charger for Canon LP-E12 and Canon EOS M, EOS Rebel SL1, EOS 100D. Electronics. Camera & Photo. Wasabi Power.

Options:
A: Belkin Leather Cover Folio with Stand for Apple iPad mini, Brown (F7N018ttC01). Electronics. Computers & Accessories. Belkin.
B: HIC Harold Import Co. 9.5" x 14" White Porcelain Rectangular Platter. Home & Kitchen. Kitchen & Dining. HIC Harold Import Co.
C: Icel Cutlery 7-inch Granton Edge Santoku Knife."Free" Icel Care Instructions Included. Home & Kitchen. Kitchen & Dining. Icel.
D: simplehuman Compact Sensor Pump with Sample Soap, White, 8oz. Home & Kitchen. Bath. simplehuman.
E: Cold Steel Double Agent I, Grivory Grip, Plain, Secure-Ex Neck Sheath - 39FK. Sports & Outdoors. Sports & Fitness. Cold.
F: Ubiquiti Universal Antenna Mount (UB-AM), Set of 10. Electronics. Computers & Accessories. Ubiquiti Networks.
G: Assisted Opening Folding Knife. Sports & Outdoors. Sports & Fitness.
H: Mace Brand Police Strength Pepper Spray Pen Defender. Sports & Outdoors. Sports & Fitness. Mace.
I: Under Armour Boys' Integrated Football Pants. Sports & Outdoors. Sports & Fitness. Under Armour.
J: ARC International Luminarc Bola Margarita Glass, 14.5-Ounce, Set of 4. Home & Kitchen. Kitchen & Dining. Arc International.
K: Bluetooth Speaker, Poweradd Portable Bluetooth Wireless Mini Speaker with Built-in Microphone, Rechargeable Battery, AUX Line-in for iPhone 6 Plus, iPhone 6 5s 5 5c, Bluetooth...
L: Cuisinart 733-30H Chef's Classic Stainless 5-1/2-Quart Saute Pan with Helper Handle and Cover. Home & Kitchen. Kitchen & Dining. Cuisinart.
M: Best Choice Products Yoga Balance Exercise Ball w/ 2 Resistance Bands & Pump. Sports & Outdoors. Sports & Fitness. BEST CHOICE PRODUCTS.
N: Sunbeam 76893.05 Kitchen Bake 5-Piece Bakeware Set, Carbon Steel. Home & Kitchen. Kitchen & Dining. Gibson.
O: Fintie iPad Air 2 Case - [SlimShell] Ultra Lightweight Stand Smart Protective Cover with Auto Sleep/Wake Feature for Apple iPad Air 2, Black. Electronics. Computers...
P: SUNYEE White Crystal Rhinestone Bling DJ Over-Ear Headphones Headset 3.5mm Audio Plug plus Microphone Compatible with iPhone, iPad, iPod and most of phones with 3.5mm...
Q: Disposable Aluminum 5" Tart Pan/individual Pie Pan w/ Clear Dome Lid #501P (500). Home & Kitchen. Kitchen & Dining. KitchenDance.
R: adidas Double Kicking Target, Taekwondo Kicking Target,Martial Arts Equipment. Sports & Outdoors. Sports & Fitness. adidas.
S: Mikasa French Countryside Oval Serving Platter, 15-Inch. Home & Kitchen. Kitchen & Dining. Mikasa.
T: Newdigi® High Quality 64GB Finger shaped USB Flash drive +Gift box. Electronics. Computers & Accessories. Wewdigi.
Answer: O