Instruction: Carefully assess the user's review for any strong expressions of sentiment, either positive or negative. Based on your analysis, select the most fitting sentiment option from the provided list as output.

Input:
I bought this as a last ditch effort to fix the CD burner in my BR1600CD multitrack recorder, as it seemed to have bitten the dust. I ran the disk and it fixed it quickly. Been burning CDs all day. Later on I discovered that the CD player in my iMac wasn't playing anything I fed it. I ran the cleaning disk and it was fixed in minutes.

There's an introductory track on the CD, then the cleaning track, then a series of test sounds and whatnot to "calibrate" your CD player. I think most of that stuff is unnecessary or at best useful for a few hardcore audiophiles, I don't know. But the 30 second cleaning track is worth the price. Before you toss your CD player, give this a try, it might surprise you. It's important to keep the laser head clean.

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