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.

A liquid secondary bond market allows an investor to sell a bond at:
Option A:the desired price.
Option B:a price at least equal to the purchase price.
Option C:a price close to the bond’s fair market value.

Answer: C