问题如下：
An arbitrage transaction generates a net inflow of funds:
选项：
A.throughout the holding period.
B.at the end of the holding period.
C.at the start of the holding period.
解释：
C is correct.
Arbitrage is a type of transaction undertaken when two assets or portfolios produce identical results but sell for different prices. A trader buys the asset or portfolio with the lower price and sells the asset or portfolio with the higher price, generating a net inflow of funds at the start of the holding period. Because the two assets or portfolios produce identical results, a long position in one and short position in the other means that at the end of the holding period, the payoffs offset. Therefore, there is no money gained or lost at the end of the holding period, so there is no risk.
为什么在持有期结束时收益会抵消呢
