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: The user's purchase history implies her preferences. Rank the items in the options based on the user's preferences. Output the item that the user is most likely to purchase next from the options.

Input:
Purchase History:
1st: GRIP MASTER Gripmaster Hand And Finger Exerciser Combo Pack -Red And Black.  GRIP MASTER.
2nd: Gerber Bear Grylls Scout Knife, Serrated Edge, Drop Point [31-000754]. Sports & Outdoors. Sports & Fitness. Gerber.

Options:
A: Old World Christmas Ornaments: Airplane Glass Blown Ornaments for Christmas Tree. Home & Kitchen. Home Dcor. Old World Christmas.
B: [DISCONTINUED] PNY 240 GB CS1211 Internal 2.5" SATA III Value Solid State Drive SSD7CS1211-240-RB. Electronics. Computers & Accessories. PNY.
C: Richards Homewares Holiday 3 Drawer 54 Cell Ornament Chest-Green. Home & Kitchen. Storage & Organization. Richards Homewares.
D: Sony OEM Original Part: 1-490-027-12 DVD Player Remote Control. Electronics. Accessories & Supplies. Sony.
E: Great Northern Popcorn Black Paducah 8 Ounce Bar Style Antique Popcorn Machine. Home & Kitchen. Kitchen & Dining. Great Northern Popcorn Company.
F: Plugable USB 2.0 Switch for One-Button USB Device Port Sharing Between Two Computers (A/B Switch). Electronics. Computers & Accessories. Plugable.
G: One Touch 4 Function Power Mixer with Beat, Whip, Mix, and Blend. Home & Kitchen. Kitchen & Dining. Think Tank Technology.
H: MOUSAI VS18 Portable Wireless Bluetooth Speaker Super Bass Build-in FM Radio,AUX,MIC,TF Card Slot(Black). Electronics. Portable Audio & Video. MOUSAI.
I: Atill Multipoint Connection 4.1 Bluetooth Audio Music Receiver A2DP Wireless Adapter with 3.5mm AUX Port and Hands Free Calling for iPhone Samsung Android, Headphone, Speakers,...
J: G-Form Pro-X Knee Pads(1 Pair) - Youth Adult.  G-Form.
K: Super Power Supply® 3 x 7dBi 2.4GHz 5GHz Dual Band WiFi RP-SMA Antenna for Routers Linksys EA6900 TP-Link TL-WR1043ND TL-WR2543ND TL-WDR4300 ASUS RT-N16 RT-N66U RT-AC66U...
L: YETI Bottle Key Bottle Opener. Home & Kitchen. Kitchen & Dining. YETI.
M: KC CUBS Kev & Cooper Playtime Collection ABC Alphabet Animal Educational Area Rug - 3'3" x 4'7". Home & Kitchen. Home Dcor. KC CUBS.
N: Just Bike There Bicycle Seat Cover - Best Padded Mountain and Road Memory Foam Saddle Cushion Pad for Exercise Comfort - Unisex Men and Women...
O: WATERFLY Hiking Backpack, Ultra-Light Water Resistant Travel Backpack/Packable & foldable Hiking Daypack. Sports & Outdoors. Outdoor Recreation. WATERFLY.
P: Ecloud ShopUS Blue 8GB 8G USB Flash Drive LCD Mini MP3 Player w/ FM Radio. Electronics. Computers & Accessories. Ecloud ShopUS.
Q: StarTech.com 6 ft / 2m Black SuperSpeed USB 3.0 Cable A to A - USB 3 A (m) to USB 3 A (m). Electronics. Computers...
R: Crosman Vigilante 357 Co2 Air Pistol Kit with Holster and 3-Pack of Magazines. Sports & Outdoors. Sports & Fitness. Crosman.
S: Tiffen 52mm Photo Essentials Kit with UV Protector, 812 Color Warming, Circular Polarizing Glass Filters and 4 Pocket Pouch. Electronics. Camera & Photo. Tiffen.
T: 1 X 30mm Tiger Eye Puff Heart Worry Healing Stone. Home & Kitchen. Home Dcor. Something Glassy.


assistant
Answer: R