In Which of the Three Activity Categories of a Statement

In which of the three activity categories of a statement of cash flows would each of the following items appear and do they represent a cash inflow or cash outflow
-Cash interest paid

A) Op Out = Operating Cash Outflow
B) Op In = Operating Cash Inflow
C) Inv Out = Investing Cash Outflow
D) Inv In = Investing Cash Inflow
E) Fin Out = Financing Cash Outflow
F) Fin In = Financing Cash Inflow