下列程序执行后文本框Text1显示的内容是（  ）

s = "Inter(R) Core(TM) i3-4130 CPU @ 3.40GHz"

flag = False:k = 0

For i = 1 To Len(s)

 ch = Mid(s, i, 1)

 If ch >= "A" And ch <= "Z" or ch >= "0" And ch <= "9" Then

  If Not flag Then

   k = k + 1

   flag = True

  End If

 Else

  flag = False

 End If

Next i

Text1.Text = Str(k)

A、6

B、9

C、10

D、18