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 not a function of the financial system?
Option A:To regulate arbitrageurs’ profits (excess returns).
Option B:To help the economy achieve allocational efficiency.
Option C:To facilitate borrowing by businesses to fund current operations.

Answer: A