Instruction: Given the user's review, identify the user's sentiment from the listed options. Answer using one of the options.

Input:
This is great. originally I thought it was a twist timer for some reason but this just sits in the water and gets "cooked" the same as the egg. The color changes as it gets hotter. I took it out of the pot and it was cool to the touch almost immediately after removing it. I hope it lasts. After a short time the color returned to room temp. its pretty neat.

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