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: BOSS Audio MR60W 200 Watt (Per Pair), 6.5 Inch, Full Range, 2 Way Weatherproof Marine Speakers (Sold in Pairs). Electronics. Car & Vehicle Electronics. BOSS...
2nd: Uniden UM380 25 Watt Fixed Mount Marine VHF Radio, Class D, DSC, Waterproof Level IPX4/JIS4, S,A,M,E, Emergency/NOAA Weather Alert, USA/International and Canadian Marine Channels -...

Options:
A: Earhoox for Round Earbuds - The #1 Earbud Attachment Popular for iPhone 3G/4S, Sony, JVC, Skullcandy and Other Earbuds, Blue. Electronics. Accessories & Supplies. Earhoox.
B: BOSS Audio MC900B 500 Watt, 4 Channel, All-Terrain, Weather Resistant Amplifier System With Bluetooth Multifunction Remote. Electronics. Car & Vehicle Electronics. BOSS Audio Systems.
C: Fire HD 7 Case - Exact Amazon Fire HD 7 4th Gen Case [PRO Series] - Premium PU Leather Folio Case for Amazon Fire HD...
D: Wild River by CLC Custom Leathercraft WNAC02 Tackle Tek Lure Cover. Sports & Outdoors. Sports & Fitness. Custom Leathercraft.
E: KitchenAid 14-Cup Glass Coffee Maker: Empire Red. Home & Kitchen. Kitchen & Dining. KitchenAid.
F: Scosche IUHP3 Sport Ear Buds (Discontinued by Manufacturer). Electronics. Headphones. Scosche.
G: Achim Imports White Vinyl 1" Mini Blinds - 43" Wide x 64" Long. Home & Kitchen. Home Dcor. Achim Imports.
H: Intex Quick-Fill AC Electric Air Pump. Sports & Outdoors. Outdoor Recreation. Intex.
I: JacobsParts Thunderbolt Mini Display Port DP to HDMI Cable Adapter for Apple MacBook Air, Pro, iMac, Mac Mini, Intel NUC, Windows Laptop or Desktop. Electronics...
J: Deco 79 64735 Ceramic/Capes Shell Vase, 14"H x 11"W. Home & Kitchen. Home Dcor. Deco 79.
K: Solid Signal Xtreme Signal HDB2X High Definition Indoor/Outdoor 2-Bay VHF/UHF Antenna. Electronics. Accessories & Supplies. Xtreme Signal.
L: Vance 81512C Vance 15 x 12" Clear Surface Saver Tempered Glass Cutting Board. Home & Kitchen. Kitchen & Dining. VANCE.
M: Zombie Hunter Black Assisted Toxic Green Biohazard Dagger Blade Knife (Black). Sports & Outdoors. Sports & Fitness. Snake Eye Tactical Tac Force.
N: SPRINGROSE White Large Lifetime Polyester Folding Wedding Chair Covers (Pack of 10). Home & Kitchen. Home Dcor. SPRINGROSE.
O: High Rebound Skate Wheels + ABEC-7 Speed Bearings. Sports & Outdoors. Outdoor Recreation. Unknown.
P: Hem Incense Sticks Attracts Money Good Luck Good Fortune Gold Silver = 80 Sticks + Burner!. Home & Kitchen. Home Dcor. Hem.
Q: Woolrich Men's Trout Run Flannel Shirt. Sports & Outdoors. Outdoor Recreation.
R: KitchenAid KSMCB5RP 5-Qt. Tilt-Head Ceramic Bowl - Regal Purple. Home & Kitchen. Kitchen & Dining. KitchenAid.
S: Projector Ceiling Mount for EPSON PowerLite Home Cinema 3020 3020e. Electronics. Accessories & Supplies. Projector-Gear.
T: Sound Science Corp Qsb 30-Watt USB Stereo Speaker Set (TUS510). Electronics. Computers & Accessories. Sound Science Corp.


assistant
Answer: B