单击命令按钮时，下列程序的执行结果是
Private Sub Command1_Click()
Dim a As Integer，b As Integer，c As Integer
a=3
b=4
c=5
Print SecProc(c，b，

A．
End Sub
Function FirProc(x As Integer，y As Integer，z As Integer)
FirProc=2*x+y+3*z
End Function
Function SecProc(x As Integer，y As Integer，z As Integer)
SecProc=FirProc(z，x，y)+x
End FunctionA) 20
B．22
C．28
D．30