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: (2018 Update) Altura Photo Rubber Eyepiece Eyecup for Canon Rebel T6i T5i T5 T4i T3i T3 T2i SL1, Canon EOS 70D 1100D 700D 650D 600D...
2nd: Black Rapid Extreme Sport Strap With "2 Quick Release Plates" for the Manfrotto RC2 Rapid Connect Adapter. Electronics. Camera & Photo. BlackRapid.

Options:
A: Caroling Christmas Bells - 9 Piece Pre-Tuned Musical Bells Strand. Home & Kitchen. Home Dcor. MergHome.
B: Marvel MVA-278 Captain America Waffle Maker, Blue. Home & Kitchen. Kitchen & Dining. Marvel.
C: Technology Research 34730 Surge Guard, 30 Amp. Electronics. Accessories & Supplies. TRC.
D: OP/TECH USA Tripod Strap (Black). Electronics. Camera & Photo. OP/TECH USA.
E: Super Power Supply® AC / DC Adapter Charger Cord for Roland PSB-1U PSB-1 PSB-120 ACB-120 ACF-120 ACK-120 ACI-120 ACI-120C Wall Plug. Electronics. Accessories & Supplies...
F: Cblwhl 7-Pin S-Video to 3 RCA RGB Component TV HDTV Cable. Electronics. Accessories & Supplies. Crazy Cart.
G: 4-Pack Replacement Filter for Neato XV-21 Pet & Allergy Automatic Vacuum Cleaner. Home & Kitchen. Vacuums & Floor Care. UpStart Battery.
H: Star Wars Mug - Darth Vader Imperial Porcelain Coffee Cup - 10 oz. Home & Kitchen. Kitchen & Dining. Underground Toys.
I: Hilljak Ruger Mark II, III, IV, 22/45, S&W Victory 22LR, Beretta U22 Neos, Browning Buck Mark Magazine Loader, Speed Loader Quickie Loader - Dark Earth...
J: Cramer 1001-61 Kik Step Rolling Step Stool, Copper. Home & Kitchen. Furniture. Cramer.
K: Anker SoundCore Bluetooth Speaker with 24-Hour Playtime, 66-Feet Bluetooth Range & Built-in Mic, Dual-Driver Portable Wireless Speaker with Low Harmonic Distortion and Superior Sound -...
L: Speed Racer: Insulated Lunch Box. Home & Kitchen. Kitchen & Dining. KOEPUO.
M: iPad Air CASE, E LV iPad Air Case Cover, Hybrid Dual Layer Armor Defender Protective Case Cover with 1 Black Stylus for Apple iPad Air...
N: Friday the 13th Jason Voorhees "Welcome to Camp Crystal Lake" Morphing Mug. Home & Kitchen. Kitchen & Dining. Trend Setters.
O: Olive Wood Small Pocket - Holding Crosses (25). Home & Kitchen. Home Dcor. My Caring Cross.
P: Microsoft Natural Ergo Keypad 4000 Win32 USB Port English Canada Hdwr CD(B2M-00013). Electronics. Computers & Accessories. Microsoft.
Q: Assurant 3-Year Kitchen Protection Plan ($25-$49.99). Home & Kitchen. Kitchen & Dining. Assurant Solutions.
R: CDEAL Bib Cycling Bicycle Bike Padded Shorts Knicks. Sports & Outdoors. Outdoor Recreation. CyclingDeal.
S: Panasonic Lumix DMC-ZS60 Screen Protector, BoxWave [ClearTouch Crystal (2-Pack)] HD Film Skin - Shields from Scratches for Panasonic Lumix DMC-ZS60. Electronics. Computers & Accessories. BoxWave.
T: Cygolite Metro 400 USB Rechargeable Bike Light, Powerful 400 Lumen Bicycle Headlight for Road Cycling and Commuters, 6 Different Lighting Modes for Day and Night...


assistant
Answer: D