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.

The risk that the price at which investors can actually transact differs from the quoted price in the market is called:
Option A:spread risk.
Option B:credit migration risk.
Option C:market liquidity risk.

Answer: C