What issue might you encounter when upgrading Forms 6i applications that you previously deployed using the Forms Listener?

What issue might you encounter when upgrading Forms 6i applications that you previously deployed using the Forms Listener?

A.
Forms that use OCX items do not compile.

B.
Fonts are changed to proportional fonts.

C.
When-Mouse-Enter and When-Mouse-Leave triggers no longer function.

D.
You receive a run-time error because of missing classes for a JavaBean.

E.
The application may be using the HOST built-in to call client operating system commands.