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 bought this because my chiropractor recommended it for some back and neck issues I was experiencing.  I'm 250 pounds and it supports me well.  My chiropractor worked with me to find the size that, while seated, had my lower legs at a 90 degree angle to my upper legs and my upper legs at a 90 degree angle to my torso.  It's done wonders for my back and neck and I've really appreciated it.  My chiropractor said the ball is designed to stretch or something so it doesn't pop and drop me on the floor.  Frankly, I can't believe that, but it's been working great for quite a while now.  Just so you know, the directions specifically state that it is NOT designed for a sitting on.  At least I told you. :)

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