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 the following statements describing a par curve is incorrect?
Option A:A par curve is obtained from a spot curve.
Option B:All bonds on a par curve are assumed to have different credit risk.
Option C:A par curve is a sequence of yields-to-maturity such that each bond is priced at par value.

Answer: B