请问老师为什么A选项不对？

问题如下：

In describing heuristics and other modeling techniques, Montgomery is most accurate with respect to:

选项：

A.Comment 1. B.Comment 2. C.Comment 3.

解释：

Solution

C is correct. The 1/N rule asset allocation heuristic involves equally weighting allocations to assets; 1/N of wealth is allocated to each of N assets available for investment at each rebalancing date. All assets are treated as indistinguishable in terms of mean returns, volatility, and correlations.

A is incorrect. It is not an optimization model. The 60/40 stock/bond heuristic allocates 60% of assets to equities, supplying a long-term growth foundation, and 40% to fixed income, supplying risk reduction benefits.

B is incorrect. The Norway model passively invests in publicly traded securities subject to environmental, social, and governance concerns. In comparison, the endowment model asset allocation emphasizes active management of large allocations to non-traditional investments, seeking to earn illiquidity premiums.