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

Input:
These chairs transformed our outdoor concert watching experience. We're a big fan of outdoor shows in the summer, but always end up with sore backs and arms by the end of shows that we sate on picnic blankets, particularly on steep or even gradual inclines. These chairs provide a comfortable alternative to blanket sitting, and offer a surprising amount of back support for a very slim and easily packable design. They allow us to sit for much longer at shows without fatigue and are easy to tighten and loosen to accommodate users of all sizes. The only difference I noticed from the description on the site was that the chairs we received did not include a cup holder as advertised. This is not that bid of a deal, as you are supported enough to have both hands free while in the chair, but does not exist if that's a feature you're looking for.

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