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

Input:
I use this to illuminate my Traktor S4 controller when DJing in dark places, helps me keep track of things and lights up the decks so I don't have to worry about suddenly losing my place because of the computer screen blinding me. I stuck them on the laptop upper deck, pointing down towards the S4, really really neat effect.

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