想问一下 这道题如果计算的话，应该怎样得出和正确答案一样的结果。感谢！
NO.PZ2018101901000065
问题如下：
At the beginning of Year 1, a fund has $1 million under management; it earns a return of 8% for the year. The fund attracts another $10 million at the start of Year 2 and earns a return of 15% for that year. The money-weighted rate of return is most likely:
选项：
A.
less than the time-weighted rate of return.
B.
the same as the time-weighted rate of return.
C.
greater than the time-weighted rate of return.
