Instruction: Analyze the user's review text and determine the overall sentiment expressed, then choose the corresponding sentiment option from the provided list (A: very positive, B: positive, C: neutral, D: negative, E: very negative) based on the identified sentiment.

Input:
i've been using this keyboard since it came out many years ago. i just got a new one. i considered the new ms upgrades and the competition, read the reviews, and am very happy with my favorite keyboard. i have it connected to a kvm switch, so i can use the same keyboard for all my workstation computers. works well with ps/2 and usb. i am glad they didn't discontinue this old model. best ergonomic design, fine tactile response, no complaint. best keyboard at great price. as good as it gets.

Options:
A: very positive
B: positive
C: neutral
D: negative
E: very negative
Answer: A: very positive