答案及解析：[单选题]设有如下程序代码： Private Function Fc(ByVal n As Integer) As Integer Fc = n * Fj(5) End Function Private F

问题：

[单选题]设有如下程序代码：
Private Function Fc(ByVal n As Integer) As Integer
Fc = n * Fj(5)
End Function
Private Function Fj(ByVal n As Integer) As Integer
Fj = n + 3
End Function
Private Sub Command1_Click()
Dim a As Integer
a = 3
Form1.Print Fc(a)
End Sub
程序时单击命令按钮，在窗体上输出的结果为（）。
A.5
B.15
C.24
D.3