When two or more systems are integrated, input/output controls must be reviewed by an IS auditor
in the:

A.
systems receiving the output of other systems.

B.
systems sending output to other systems.

C.
systems sending and receiving data.

D.
interfaces between the two systems.

Explanation:

Both of the systems must be reviewed for input/output controls, since the output for one system is
the input for the other.