实现上述功能的 VB 程序如下，请回答下列问题：

i = 1: j = 8: s = ""

key =Text1.Text

Do While i <= j

  m =(i + j) \ 2

  If key = a(m) Then

   s = s + "M"

   Exit Do

  ElseIf key > a(m) Then

   j = m - 1: s = s + "L"

  Else

   i = m + 1: s = s + "R"

  End If

Loop

Text1.Text = s

数组元素a(1)到a(8)的值依次为“4,22,27,32,35,44,56,59”，该程序段执行后，文本框Text1中显示的内容不可能是（  ）

a(1) = 11 : a(2) = 14 : a(3) = 23 : a(4) = 23 : a(5) = 30 : a(6) = 42

key = Val(Text1.Text)

L = 1 : R = 6 : x = 0

Randomize

Do while L <= R

    mid = Int(Rnd() * (R-L+1))+ L

    If a(mid) = key Then

        Exit Do

    ElseIf a(mid) > key Then

        R = mid - 1

        x = x - 1

    Else

        L = mid + 1

        x = x + 1

    End If

Loop

If L <= R Then

    Label1.Caption = "查找成功，" + "位置为" + str(mid)

Else

    Label1.Caption = "查找失败"

End If

该程序执行后，在文本框Text1中输入23，则x的值不可能是（  ）