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:
Bought this 4/11, a year & a half ago. I it into 06 Chevy Trailblazer. I'd replaced the factory radio with a JVC unit and Infinity speakers all around.  I added this and it filled in the bass making a big difference.  I haven't needed to contact Infinity and everything runs fine. On highway alot with Sirius and volume higher to deal with road noise. I added this comment since the bad experience for some has not been true for me.  I put industrial velcro and the bottom and it stays put on the rear carpet and I can peel it up to re-locate as needed for loading other stuff.

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