Task: Sequential_Recommendation

system
You are a helpful assistant. The assistant first thinks about the reasoning process in the mind by using Belief-Desire-Intention (BDI) framework and then provides the user with the answer. The reasoning process and answer are enclosed within <think> </think> and <answer> </answer> tags, respectively. 
Below is an instruction that describes a task. After thinking, when you finally reach a conclusion based on the customer's intention, desire and belief, clearly state the BDI thinking process within <think> </think> and then the answer within <answer> </answer> tags.


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

Input:
Purchase History:
1st: Blue Totem Silicone Rubber Gel Soft Skin Case Cover for iPod Touch 4th Generation 4G 4. Electronics. Portable Audio & Video. Generic.
2nd: eForCity Hybrid Case for iPod touch 4G (Black/Green). Electronics. Portable Audio & Video. eForCity.

Options:
A: Elegant Lighting 3 Drawer 4 Door Cabinet in Silver Clear 60" x 14" x 36". Home & Kitchen. Furniture. Elegant Lighting.
B: Batman - New Poster (Bat Logo) (Size: 36'' x 24''). Home & Kitchen. Wall Art. RhythmHound.
C: Direct Action Dust Tactical Backpack. Sports & Outdoors. Sports & Fitness. Direct Action.
D: NEC MultiSync LCD1935NXM 19" LCD Monitor. Electronics. Computers & Accessories. NEC.
E: Best Luxury 4 Piece Bed Sheet Set Solid Premier - Deep Pocket - Extra Soft - Easy Fit - Wrinkle Resistant (Queen, White). Home &...
F: Mini Stylus Pen,[Set of 3] Metallic Red Universal Capacitive Touch Screen Short Stylus/Styli Pen with Jack Dust Cap for All Capacitive Touch Screen Smart Phones and Tablets...
G: Otis 5.56mm Butt Stock Kit (non mil). Sports & Outdoors. Sports & Fitness. Otis Technology.
H: Kitchenaid Stainless Steel 4 Slice Wide Toaster. Home & Kitchen. Kitchen & Dining. KitchenAid.
I: Opteka FSC-5 E-TTL II Off-Camera Flash Sync Cord for Canon EOS 580EX II, 430EX II, 270EX, MT-24EX, MR-14EX, 320EX & 270EX II Speedlite Flashes (75"...
J: Samsung Simple Cover for Galaxy Tab S 10.5 (EF-DT800BWEGUJ). Electronics. Computers & Accessories. Samsung.
K: Top Finel Placemats,Vinyl Table Mats Set of 6,Heat Resistant Place Mats for Dining Table Washable Anti-Skid,Yellow. Home & Kitchen. Kitchen & Dining. Top Finel.
L: Standard Horizon HX290 Handheld VHF Marine Radio, 5 Watts. Electronics. Car & Vehicle Electronics. Standard Horizon.
M: Marumi 95mm DHG Super MC Lens Protect Slim Safety Filter 95. Electronics. Camera & Photo. Marumi.
N: Folklore Enamel White Coffee Pot, Day Design (33 Ounces). Home & Kitchen. Kitchen & Dining. Folklore.
O: Chuwi Hi12 12.2'' Windows 10 Ultrabook Tablet PC with Intel Cherry Trail Z8300 Quad-Core CPU 64 Bit 2166 x 1440 Retina Screen 4GB/64GB WiFi HD-Out...
P: Living Dead Apocalypse Full Tang Ninja Sword. Sports & Outdoors. Sports & Fitness. SNAKE EYE TACTICAL.
Q: Allen Company Daypack. Sports & Outdoors. Sports & Fitness. Allen Company.
R: TRENDnet Wireless AC1750 Dual Band Gigabit Router with USB 3.0 Share Port, Pre-Encrypted, TEW-812DRU. Electronics. Computers & Accessories. TRENDnet.
S: Universal Smart Phone/ Smart Tablet Stylus Pen - 5 Pack. Electronics. Computers & Accessories. Generic.
T: Smart Weigh Digital Kitchen Scale and Timer - Food Scale - Slim Stainless Steel Design - High Accuracy - LCD Backlight. Home & Kitchen. Kitchen...


assistant
Answer: S