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: iPad Air Case, [CORNER PROTECTION] CaseCrown Bold Standby Pro (Black) with Sleep/Wake, Hand Grip, Corner Protection, Multi-Angle Viewing Stand. Electronics. Computers & Accessories. CaseCrown.
2nd: Sony 55mm F1.8 Sonnar T FE ZA Full Frame Prime Lens - Fixed. Electronics. Camera & Photo. Sony.
3rd: Sony Alpha a7II Mirrorless Digital Camera - Body Only. Electronics. Camera & Photo. Sony.
4th: Sennheiser HDR 180 Headphone Receiver. Electronics. Headphones. Sennheiser.
5th: EMPTY. Electronics. Camera & Photo. Vivitar.

Options:
A: Tramontina 80020/506 15 Piece Cutlery Block Set New in Box. Home & Kitchen. Kitchen & Dining. Tramontina.
B: Elkadart Dart Accessory: O-Ring Applicator Tool with 10 2BA Rubber O-Rings/Washers (Steel and Soft Tip Darts). Sports & Outdoors. Sports & Fitness. Elkadart.
C: EBBQ HV60KNP-BRK Piranta-Original Quik-Change. Sports & Outdoors. Sports & Fitness. EBBQ.
D: Flammi Women's Exercise Gloves Fitness Gym Workout Gloves Fundamental Training Gloves. Sports & Outdoors. Sports & Fitness. F Flammi.
E: GriffinReveal for iPod Touch 5 - Black/Clear,. Electronics. Portable Audio & Video. Griffin Technology.
F: Schrade SCHF9N Extreme Survival Full Tang Drop Point Fixed Blade TPE Handle. Sports & Outdoors. Sports & Fitness. Schrade.
G: Waring Commercial HGB140 1/2-Gallon Food Blender with 64-Ounce Copolyester Container. Home & Kitchen. Kitchen & Dining. Waring.
H: Oumers Protect Waist Climbing Harness, Protect Leg Waistbelt Wider Belt for Mountaineering Fire Rescue Higher Level Caving Rock Climbing Rappelling Equip Women Man Child Half...
I: Sony HVLF32M MI (Multi-interface shoe) Camera Flash. Electronics. Camera & Photo. Sony.
J: Aroma Housewares  AEW-305 Electric Wok, Black. Home & Kitchen. Kitchen & Dining. Aroma Housewares.
K: Actiontec 300 Mbps Wireless-N ADSL Modem Router (GT784WN). Electronics. Computers & Accessories. Actiontec.
L: Realtree AP Pink Queen Comforter Set. Home & Kitchen. Bedding. Realtree.
M: Sony Cybershot DSC-H7 8.1MP Digital Camera with 15x Optical Image Stabilization Zoom (OLD MODEL). Electronics. Camera & Photo. Sony.
N: AR-15 Pistol Grip Lock Washer LP1038. Sports & Outdoors. Sports & Fitness. Triggers.
O: DG Bags Fabric Trash Can Cover w/50 Zip Ties Weather Animal Proof Garbage Lid Top. Home & Kitchen. Storage & Organization. DG Bags.
P: AllerEase 100% Cotton Allergy Protection Hypoallergenic Zippered Pillow Protectors (Set of 2), Standard/Queen - 20" x 28". Home & Kitchen. Bedding. Aller-Ease.
Q: SanDisk 16GB SDHC Card Class 4 Secure Digital High Capacity - Bulk Packaging. Electronics. Computers & Accessories. SanDisk.
R: Manfrotto 131DB 23.6" Reproduction Arm with Double Camera Attachment Black . Electronics. Camera & Photo. Manfrotto.
S: Star Wars Darth Vader Holding Apple Macbook Decal Vinyl Sticker Apple Mac Air Pro Retina Laptop sticker. Electronics. Computers & Accessories. DecalPro Designs.
T: Krown Krex 2 Bamboo Freestyle Complete Longboard, 9.25x41-Inch. Sports & Outdoors. Outdoor Recreation. Krown.


assistant
Answer: I