Which of these is the total risk premium?

	a.	The proportion of return required by an investor on a risky security over and above the rate of return on equity
	b.	The proportion of return required by an investor on a risky security over and above the market rate of return
	c.	The proportion of return required by an investor on a risky security over and above the dividend rate of return
	d.	The proportion of return required by an investor on a risky security over and above the risk-free rate of return