Researchers Have Found That Over Long Periods of Time

Researchers have found that over long periods of time

A) the difference between the returns on large company and small company stocks is due solely to the difference in their risks.
B) strong form market efficiency exists,without argument.
C) large company stocks tend to outperform small company stocks.
D) arbitrage has no effect on market efficiency.
E) value stocks may outperform growth stocks on a risk-adjusted basis but no firm conclusion can be drawn.