Given a text T, and several options, according to the question posed in the text T to choose the most appropriate option from the options as the answer, please directly output the most appropriate option, do not need to output the explanation.

Which of following statements is least accurate ?
Option A:Covariance can be positive or negative.
Option B:Correlation coefficient is between -1 and +1.
Option C:Covariance is between -1 and +1.

Answer: C