单选题 Which of the following statements about the implications of tests for the efficient market hypothesis (EMH) is least accurate?

• A. By purchasing an index fund, an investor can match the market return and minimize costs.
• B. Other than corporate insiders and market specialists, most traders have monopolistic access to information, which rejects the strong-form EMH.
• C. The best way to measure the performance of investments professionals is against a randomly selected buy-hold strategy of stocks (assuming the same risk level).