In Basic v. Levinson, the Court held that in an efficient market, the stock price reflects all publically available information, and therefore, the investor relies on the integrity of that price. As a result, the price affected by any misstatements by the company can defraud stock buyers even though they did not rely on the misstatements when they bought the stock. This is known as the ____________________.

A. Rule 10b-5 B. caveat emptor C. fraud on the market theory D. none of the above