1199. Markowitz’s main contribution to portfolio theory is___________.

by
that risk is the same for each type of financial asset
that risk is a function of credit, liquidity and market factors
risk is not quantifiable
insight about the relative importance of variances and co variances in determining portfolio risk
✅ The correct answer is D.
Markowitz’s main contribution to portfolio theory is insight about the relative importance of variances and co variances in determining portfolio risk.

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