No.PZ2019012201000079 (选择题)
Which of following is correct regarding on Implementation Constraints?
您的回答C, 正确答案是: C
A
Twice the absolute risk will lead to twice the return.
B
Markowitz efficient frontier shows that the relationship between return and risk is convex.
C
正确There is a level of leverage beyond which volatility reduces expected returns.
这题对B的解答是：convex应该改为concave, 那么这里的convex和concave是指凸向risk & return的坐标轴原点吗？还是单单看指图形本身的凹凸就好了？单单看图他更像是convex to 原点啊？
