Which of the following relationships betwe
题型：单项选择题
问题：
Which of the following relationships between arbitrage and efficient markets is least accurate()
A. The concept of rationally priced financial instruments preventing arbitrage opportunities is the basis behind the no-arbitrage principle.
B. Momentary deviations from market efficiency can create an arbitrage opportunity.
C. Market efficiency refers to the low cost of trading derivatives because of the lower expense to traders.
