The recent creation of indexes tracking both stocks and bonds provides better benchmarking information for which of the following portfolios()

A. sector index funds.

B. the typical stock mutual fund.

C. investment funds broadly diversified across asset classes.

在采用成本加酬金合同价时，为了控制投资，最好采用( )。

A．成本加固定金额酬金

B．成本加固定百分比酬金

C．成本加最低酬金

D．最高限额成本加固定最大酬金