Which of the following statements concerning the persistence of pricing anomalies is least likely to be correct（）

A. Arbitrageurs may exploit opportunities down to the point where the remaining mispricing is approximately equal to transactions costs.

B. If the shares of an IPO cannot be shorted, mispricing may be difficult to exploit.

C. Small profit opportunities are difficult to exploit in the absence of derivative securities.

比对是指在规定条件下，对相同（）等级或指定不确定度范围的同种测量仪器复现的量值之间比较的过程。

（A）测量

（B）误差

（C）基本误差

（D）准确度