NO.PZ2018062004000090
问题如下：
Which of the following classifications of activities are used in the cash flow statement?
选项：
A.
Direct, indirect and non-cash activities.
B.
Operating, investing and financing activities.
C.
Inflow, outflow and net flow activities.
解释：
B is correct. All companies engage in operating,investing and financing activities. These activities are the classifications used in the cash flow statement under both IFRS and US GAAP.
请问C为何错，怎么理解
