2	A company's capital structure consists of common stock and debt. Which of the following events will increase the company's WACC and why? Note: There can be more than one correct answer.
	a.	An increase in the market risk premium.
	b.	An increase in the tax rate.
	c.	A decrease in the risk-free rate.
	d.	An increase in expected inflation.
	e.	A reduction in the companys beta.
	f.	Sales revenues increase.