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 explains a characteristic of futures price limits? Price limits:
Option A:help the clearinghouse manage its credit exposure.
Option B:can typically be expanded intra-day by willing traders.
Option C:establish a band around the final trade of the previous day.

Answer: A