In a study conducted by Jagannathan and Wang, it was found that the performance of beta in explaining security returns could be considerably enhanced by: I. Including the unsystematic risk of a stock II. Including human capital in the market portfolio III. Allowing for changes in beta over time

In a study conducted by Jagannathan and Wang, it was found that the performance of beta in explaining security returns could be considerably enhanced by:
I. Including the unsystematic risk of a stock
II. Including human capital in the market portfolio
III. Allowing for changes in beta over time 




A. I and II only

B. II and III only

C. I and III only

D. I, II, and III





Answer: B


Investment Finance

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