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

The WORST EXPERIENCE EVER. Not only did they serve us EXTREMELY salty food - for all three dishes and one EXTREMELY SOUR- we had three people in our party, so it's not just my opinion- when we told them to try it, they said it suits out taste and refused to cancel the charge until after thirty minutes of disputing with them. WILL NEVER RETURN HERE. (Btw Chinese people at our table so they actually know what it's supposed to taste like)

Available options:
(A). negative
(B). positive
(A).