You are estimating the Index model while accounting for the possibility that the fund manager may engage in market timing. What evidence would indicate the presence of successful market timing?

	a.	A positive and statistically coefficient estimate for the squared return on the market
	b.	A positive and statistically significant alpha
	c.	A negative and statistically significant estimate for the dummy variable, D (where D=1 when market return is positive and D=0 when market return is negative)
	d.	A positive and statistically significant beta