Question

If a market proxy portfolio consistently beats all professionally managed portfolios on a risk adjusted basis, it may be concluded that

A. the CAPM is valid.

B. the market proxy is mean/variance efficient.

C. the CAPM is invalid.

D. the CAPM is valid and the market proxy is mean/variance efficient.

E. the market proxy is mean/variance efficient and the CAPM is invalid.

Answer

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