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 is most likely a characteristic of a concentrated industry?
Option A:Infrequent, tacit coordination.
Option B:Difficulty in monitoring other industry members.
Option C:Industry members attempting to avoid competition on price.

Answer: C