Choose your answer: is the following review positive or negative?

I ended up not using them for my alteration needs, but writing a review based on CUSTOMER SERVICE...I emailed them through yelp about questions specific to what I needed done, and I was impressed that someone responded right away, politely answering all of my questions to the T and inviting my to call or come in with any others...No pressure at all. If that kind of service is any indication to the work they do then they deserve 5 stars!

Options are:
a). negative;
b). positive;
b).