Suppose that the market can be described by the following three sources of systematic risk with associated risk premiums. The return on a particular stock is generated according to the following equation: r = 10% + 1.0/+ 0.6R + 0.80C + e Find the equilibrium rate of return on this stock using the APT. The T-bill rate is 3%. (Do not round intermediate calculations. Omit the "%" sign in your response.) Is the stock over- or underpriced? Underpriced Overpriced