In an efficient market:

	a.	Investors will consistently earn above the market-average rate of return with a low level of risk and no private information.
	b.	And with the proper analysis, a company can improve the terms on which it sells securities by selecting the optimal time to sell.
	c.	The proper analysis of public information is helpful in forecasting future prices.
	d.	And in the absence of private information, the best forecast of future price is the current price.

Is it A, B, C, or D?