问题详情

下列程序运行后，信息框显示的内容是()。
Private Sub Command1_Click()
Dim s1 As String
Dim s2 As Integer
s1 = "Hello-World,2004"
s2 = Len(s1) + InStr(1, s1, "2")
MsgBox s2
End Sub
A.Hello-World
B.2003
C.16
D.29