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.

Credit spreads are most likely to widen:
Option A:in a strengthening economy.
Option B:as the credit cycle improves.
Option C:in periods of heavy new issue supply and low borrower demand.

Answer: C