Instruction: Determine the sentiment expressed by the user in her review from the provided choices, and respond by selecting one of the available options.

Input:
I bought these primarily for a speaker that had a headphone jack (neccessary for listening to streaming music online late at night). What I didn't anticipate was the extraordinary bass reproduction from a two piece system. Right now I am listening to a Beethoven Cello Sonata, and the bass  tones from the cello are felt in my chest! I am amazed because I thought I  would need a subwoofer to get realistic bass. Quite simply, I feel as if  sitting right next to the cellist. For the price this is well worth every  penny. And the headphone jack is a nice bonus that a lot of speaker systems  don't have.

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