问题
单项选择题
Capital market efficiency is desirable, but there are limitations in achieving full market efficiency. Which of the following is least likely to be a limitation in achieving full capital market efficiency（）
A. Cost of trading.
B. Survivorship bias.
C. Limits of arbitrage.
答案
参考答案：B
解析：
Survivorship bias is not a limitation in achieving market efficiency. It is a source of unreliability of a market anomaly.