NO.PZ2023040301000084
问题如下：
Arbitrage activity will most likely be higher in securities markets:
选项：
A.that are efficient
with no restrictions on short selling
with high information-acquisition costs
解释：
Short selling helps in price discovery. Arbitrageurs benefit from pricing discrepancies (inefficiencies); therefore, arbitrage activity will be higher in markets with no restrictions on short selling.
这题不太理解，麻烦解答一下
