Economists assume that most people take risks______.
A. because doing so is exciting
B. only when they have no riskless alternative
C. very infrequently
D. if they are compensated for taking the risks
According to the optimal portfolio theory, where should portfolios lie？______.
A. Under the efficient frontier
B. Above the efficient frontier
C. On the efficient frontier
D. Anywhere, as long as the portfolio is diversified
微信支付 
支付宝支付