Programs with several levels of nesting can be hard to follow.

The expression IIf(IsNull([ClosedDate]),"Open","Closed") displays ________

A) Closed when the ClosedDate field has no value and Open otherwise B) Open when the ClosedDate field has no value and Closed otherwise C) Closed when the ClosedDate field has no value and nothing otherwise D) Open when the ClosedDate field has no value and nothing otherwise

Which of the following calls to the GetNumber procedure is not valid?

``` Sub GetNumber(ByVal intNumber as Integer) ' (procedure body) End Sub ``` a. GetNumber(intX) b. GetNumber(3 + 5 * 8 + intX) c. GetNumber(intX + 3, intY) d. GetNumber(CInt(txtNumber.Text))