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 Function

A) 20
B) 22
C) 28
D) 30