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: Universal Sight Pusher Tool for Removing or Installing Front or Rear Sights, ( All Block Sets Included). Sports & Outdoors. Sports & Fitness. CNCSIGHTS.
2nd: Ameriglo Cap ProGlo Green Outline/Green Cap Rear Set For Glock 17/22. Sports & Outdoors. Sports & Fitness. AmeriGlo.
3rd: Fixxxer Front Sight Installation Hex Tool for Glock 3/16 Hex Nut Driver Tool. Sports & Outdoors. Sports & Fitness. Fixxxer.
4th: Vortex Optics Spitfire Prism Scopes. Sports & Outdoors. Sports & Fitness. Vortex Optics.

Options:
A: Vintage Victoria Station Railway Station Clock London - Reproduction by Upper Deck. Home & Kitchen. Home Dcor. Upper Deck.
B: Bluecell 15-inch 15.4 Carbon Fiber protection decal sticker skin for Apple Macbook Pro 15.4 unibody model A1286 (Black Color). Electronics. Computers & Accessories. BLUECELL.
C: UTG 3-9X32 1" BugBuster Scope, AO, RGB Mil-dot, QD Rings. Sports & Outdoors. Sports & Fitness. UTG.
D: Isosteel VA-9683 1.5 liter 51 fl. oz 18/8 Stainless Steel Double-Wall Vacuum Food Container incl. 3 plastic containers. Home & Kitchen. Kitchen & Dining. Isosteel.
E: SwingSmart Duo Golf Analyzer. Sports & Outdoors. Sports & Fitness. SwingSmart.
F: Dorel Living Chevron Accent Chair. Home & Kitchen. Furniture. Dorel Living.
G: Replacement Battery - Compatible with APC BACK-UPS XS 1300VA  Beiter DC Power®. Electronics. Computers & Accessories. B|beiter.
H: Spec.-Ops. Brand T.H.E. Wallet Mini. Sports & Outdoors. Sports & Fitness. Spec.-Ops. Brand.
I: Shower Pockets Shower Organizer. Home & Kitchen. Bath. MaxiAids.
J: Delicates Washing Bag - Wash Lingerie and Delicate Laundry - Great for Expensive or Private Clothes - Protect Nice Laundry from Washer - High Quality...
K: New Sata Hard Drive Connector Adapter for Dell Inspiron 1420 PP26L 1720 1721 Studio 1735 1737 Alienware Area-51 M15X M17X Vostro 1400 1700 Part NO.:...
L: Blue Paper Ice Cream Cups - 4 oz Small Dessert Bowls - Comes In Many Colors & Sizes! Frozen Dessert Supplies - Fast Shipping! 100...
M: Garmin Silocone Case for Edge 1000, Red. Electronics. Portable Audio & Video. Garmin.
N: Home Basics Scroll Collection, Chrome Napkin Holder. Home & Kitchen. Kitchen & Dining. Home Basics.
O: Home Styles 5023-95 Wood Top Kitchen Cart with Breakfast Bar, Natural Finish. Home & Kitchen. Furniture. Home Styles.
P: Spode Christmas Tree Rectangular Platters, Set of 2. Home & Kitchen. Kitchen & Dining. Spode.
Q: ASUS Eee PC Seashell 1215N-PU17-BK 12.1-Inch Netbook with 6 Hours of Battery Life - Black. Electronics. Computers & Accessories. Asus.
R: WMF Profi Plus Serving Fork. Home & Kitchen. Kitchen & Dining. WMF.
S: Aladdin 24-Ounce Revive and Refresh Water Bottle, Violetta. Home & Kitchen. Kitchen & Dining. Aladdin.
T: Santa’s Reindeer Christmas Party Photo Booth Stick Props - 12 pcs. Home & Kitchen. Event & Party Supplies. Fun Express.


assistant
Answer: C