某对分查找算法的VB程序段如下：

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、M

B、LR

C、RM

D、LM