Which of the following statement is TRUE?

		Reaction hypothesis is a research method used to study the effects news has on stock prices.
		Crash helmets is used to slow or stop trading when the DJIA declines by more than a specified amount during a trading session.
		Friday tends to have a negative average rate of return for small-cap stocks.
		January effect correctly identifies the phenomenon that states that one month has the greatest tendency for small stocks to earn large returns.