Which of the Following Statements Concerning Asset Allocation Is false

Which of the following statements concerning asset allocation is false?

A) Diversification across international boundaries can improve risk-adjusted portfolio returns.
B) Economies expected to grow at an above-average rate with above-average profit growth should be considered as candidates to overweight in a global portfolio.
C) Severe currency blockages should not impact global diversification selections.
D) Portfolio allocation among asset classes may provide higher portfolio returns while lowering portfolio risk levels.
E) None of the above (that is, all statements are true) .