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: Based on the user's historical purchases, rank the items in options and predict the next product of the user's interest from the provided options.

Input:
Purchase History:
1st: Sennheiser RS 130 Wireless Surround Sound Headphones (Discontinued by Manufacturer). Electronics. Headphones. Sennheiser.
2nd: QQ-Tech 4GB Waterproof MP3 Player Swimming or other Sports - Green. Electronics. Portable Audio & Video. QQ-Tech.
3rd: Nikon AF-S Nikkor 50mm f/1.8G Lens. Electronics. Camera & Photo. Nikon.
4th: Wasabi Power Battery Charger for Nikon MH-18, MH-18a and Nikon EN-EL3, EN-EL3a, EN-EL3e for Nikon D50, D70, D70s, D80, D90, D100, D200, D300, D300s, D700...
5th: Altura Photo Professional Cleaning Kit for DSLR Cameras and Sensitive Electronics Bundle with Refillable Spray Bottle. Electronics. Camera & Photo. Altura Photo.
6th: Head Harness Strap Mount with Chest Mount Belt Strap for Gopro Hero Hero4 Hero3 Hero3 Hero2 Hero1 and Sjcam Cameras Adjustable (Head and Chest Strap)...
7th: Wasabi Power Battery (2-Pack) and Charger for Nikon EN-EL15 and Nikon 1 V1, D600, D610, D800, D800E, D810, D7000, D7100. Electronics. Camera & Photo. Wasabi...
8th: Battery And Charger Kit For Olympus Stylus Tough TG-610 TG-810 TG-820 iHS TG-830 iHS, TG-630 iHS, TG-850 iHS, TG-860, TG-870 Digital Camera Includes Replacement LI-50B...
9th: Wasabi Power Battery (2-Pack) and Charger for Nikon EN-EL3e and Nikon D50, D70, D70s, D80, D90, D100, D200, D300, D300S, D700. Electronics. Camera & Photo...

Options:
A: Kirby Ribbed Vacuum Cleaner Belt, Fits: all Kirby upright vacuum cleaners 1960 to present, Kirby Number on belt 301291, 6 belts in pack. Home &...
B: Camp Chef Sherpa Table. Sports & Outdoors. Outdoor Recreation. Camp Chef.
C: Big Mike's Fitness Ab Straps. Sports & Outdoors. Sports & Fitness. Big Mike's Fitness.
D: DECORARTS - Horseshoe Bend, Grand Canyon, Arizona. Giclee Canvas Prints for Wall Decor. 30x20 x1.5. Home & Kitchen. Wall Art. DECORARTS.
E: SS EXTRA LARGE TUBE#2D. Home & Kitchen. Kitchen & Dining. A Birthday Place.
F: InterDesign Sand Dollar 34-Inch by 21-Inch Rug, Blue. Home & Kitchen. Bath. InterDesign.
G: Garmin 5 Inch and 6 Inch Universal Carrying Case. Electronics. GPS, Finders & Accessories. Garmin.
H: spyderco Paramilitary 2 plain blade silver. Sports & Outdoors. Sports & Fitness. Spyderco.
I: GSI Outdoors - Halulite Microdualist, Cookset for Two, Superior Backcountry Cookware Since 1985. Sports & Outdoors. Outdoor Recreation. GSI Outdoors.
J: 67mm Filter Kit for Nikon 18-105mm Camera VR DX Lens w/Bonus Microfiber Cleaning Cloth. Electronics. Camera & Photo. SSE.
K: $5 Alarm SIM Card for GSM Home/Business Security Alarm System. Electronics. Security & Surveillance. SpeedTalk Mobile.
L: DAWAY Bike Repair Tool Kits - 16 in 1 Multifunction Bicycle Mechanic Fix Tools Set Bag with Tire Patch Levers, Practical Gift. Sports & Outdoors...
M: SET of 3, 32 Oz. (Ounce) Large Clear Squeeze Bottle, Condiment Squeeze Bottle, Open-tip, Wide Screw-on Spout, Polyethylene Durable Plastic, Diner Style. Home & Kitchen...
N: CounterArt Seaside Garden/Blue Crab Design Absorbent Coasters in Wooden Holder, Set of 4. Home & Kitchen. Kitchen & Dining. Counterart.
O: Floating, Wood Shelf, Reclaimed, Rustic, Shelves, 1800's, Antique, Vintage, 24" Wide x 5" deep x 2" Thick. Home & Kitchen. Home Dcor. Joel's Antiques &...
P: Kiera Grace Linear Picture Frame, 4 by 6 Inch, Driftwood Grey. Home & Kitchen. Home Dcor. Kiera Grace.
Q: Bundle Monster Complete Series - 9 piece Ceramic Cutlery Knives Set (6" Chef's, 6" Santoku, 4" Utility, 3" Paring, and 1 Peeler) White Knife Blade...
R: Zappy - 100 Clear 4 Inches Plastic Tear Drop Appetizer Spoon Clear Plastic Spoon Tasting Spoons Soup Spoons/Asian Spoon Dessert Dish Bowls Teardrop Plates Spoons...
S: Sigma 18-250mm f3.5-6.3 DC MACRO HSM for Pentax Digital SLR Cameras. Electronics. Camera & Photo. Sigma.
T: Ruffwear Approach Pack for Dogs. Sports & Outdoors. Outdoor Recreation. Ruffwear.


assistant
Answer: S