问题如下：
The government of a country whose financial markets are in an early stage of development has hired you as a consultant on financial market regulation. Your first task is to prepare a list of the objectives of market regulation. Which of the following is least likely to be included in this list of objectives?
选项：
A.Minimize agency problems in the financial markets.
B.Ensure that financial markets are fair and orderly.
C.Ensure that investors in the stock market achieve a rate of return that is at least equal to the risk-free rate of return.
解释：
C is correct.
Ensure that investors in the stock market achieve a rate of return that is at least equal to the risk-free rate of return is least likely to be included as an objective of market regulation. Stocks are risky investments and there would be occasions when a stock market investment would not only have a return less than the risk-free rate but also a negative return. Minimizing agency costs and ensuring that financial markets are fair and orderly are objectives of market regulation.
请问 A 是什么意思，agency 这个好像没有在强化串讲里看到，为什么是正确 的呢？
