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: US PeaceKeeper P21108 Attache Gun Case (Black). Sports & Outdoors. Sports & Fitness. US PeaceKeeper Products.
2nd: Vokul Shockproof 532nm Tactical Green Dot Laser Sight Rifle Gun Scope w/ Rail & Barrel Mount Cap Pressure Switch. Sports & Outdoors. Sports & Fitness...
3rd: Golden Finger Tactical Quick Release Scope Ring Mount 25.4mm/30mm Cantilever for 20mm Picatinny Rails (Black). Sports & Outdoors. Sports & Fitness. Golden Finger Tactical.

Options:
A: Zupro Placemats, Non-Slip Insulation Placemat Set of 4PVC Weave Placemats, Adiabatic Placemats Washable Dining Room Table Mats(4pcs placemats,Dark Blue). Home & Kitchen. Kitchen & Dining...
B: Bushnell Tour V4 Slope Patriot Pack. Sports & Outdoors. Sports & Fitness. Bushnell.
C: Duty Sling - Black. Sports & Outdoors. Sports & Fitness. Red Rock Outdoor Gear.
D: Lvshan Vacuum Sealer, Food Vacuum Fresh Preservation Machine Multifunction Durablefor for Dry & Moist Packaging Storage for Meat/Wine/Dried Fruit with Starter Kits (Golden). Home &...
E: StudioSilversmiths 44265 Pr Crystal Votives Cut Design. Home & Kitchen. Home Dcor. Godinger.
F: Keurig K150P Commercial Brewing System Pre-assembled for Direct-water-line Plumbing. Home & Kitchen. Kitchen & Dining. Keurig.
G: Gallery Solutions 11x14 Black Oval Wall Frame Matted to Display 8x10 Image. Home & Kitchen. Home Dcor. Gallery Solutions.
H: Outdoor Research Aspire Jacket. Sports & Outdoors. Outdoor Recreation. Outdoor Research.
I: Benjamin BTAP22SX Armada .22 PCP Rifle, Black. Sports & Outdoors. Sports & Fitness. Benjamin.
J: Baden Low Bounce Futsal Practice Ball, Blue/White. Sports & Outdoors. Sports & Fitness. Baden.
K: Pillowflex Synthetic Down Pillow Form Insert, 12 by 18-Inch. Home & Kitchen. Bedding. Pillowflex.
L: Omaker Premium Dull Polish Finish Surface Brilliant 15600mAh(Dual 2.1A Output and 2.1A Input) Dual USB Portable Charger External Battery Pack Power bank. Electronics. GPS, Finders...
M: New AC Adapter Power Charger&US Cord for Dell Inspiron 11z 1401 1410 1505 1764 610M 8600C E1500 M5040 N301z N5030 N5040 N5050. Electronics. Computers &...
N: Kitchen PROP Manual PREMIUM STAINLESS Coffee Grinder with ADJUSTABLE Ceramic Conical Burr Mill, AEROPRESS Compatible with Portable, BEST Coffee Mill and Coffee Maker for Travel,...
O: 2 RCA Female to 3.5mm Stereo Female Splitter Audio Adapter by Atomic Market. Electronics. Accessories & Supplies. Atomic Market.
P: 22" Lighted Red Love Valentine's Day Window Silhouette Decoration. Home & Kitchen. Seasonal Dcor. Sienna.
Q: SHIMANO Stainless Road Brake Cable (1.6x2050-mm). Sports & Outdoors. Outdoor Recreation. SHIMANO.
R: Como Cycling Ring Loud Black Plastic Horn Electric Bell for Bicycle Bike. Sports & Outdoors. Outdoor Recreation.
S: NYKKOLA Novelty Silicone Mold Makeup Cosmetic Lipstick Baking Fondant Cake Decarating Y2. Home & Kitchen. Kitchen & Dining. NYKKOLA.
T: ARCTIC Sleep by Pure Rest MP-083-6Q Cooling Gel Memory Foam Antimicrobial Hypoallergenic Mattress Topper Pad. Home & Kitchen. Bedding. ARCTIC.


assistant
Answer: C