单项选择题

阅读下列程序:
Private Sub Command1_Click()
Dim i As Integer,k As Integer
  k=2
  For i=1 To 3
    Print Fun(k);
  Next
End Sub
Function Fun(j As Integer)
Static b
  a=0
  a=a+1
  b=b+1
  Fun=a*b+j
End Function
程序运行后,单击命令按钮输出结果是

A.234
B.345
C.567
D.356