题目
Which of the following best describes the shape of the portfolio possibilities curve?
选项
A.The curve is strictly convex.
B.The curve is strictly concave.
C.The curve is concave above the minimum variance portfolio and convex below the minimum variance portfolio.
D.The curve is convex above the minimum variance portfolio and concave below the minimum variance portfolio.
答案
C
解析
The portfolio possibilities curve is concave above the minimum variance portfolio and convex below the minimum variance portfolio.投资组合可能性曲线在最小方差投资组合上方是凹的，在最小方差投资组合下方是凸的。