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有如下程序段:
i = 1
Do While i <= 5
If i = 0 or a(i - 1) <= a(i) Then
i = i + 1
Else
t = a(i): a(i) = a(i - 1): a(i - 1) = t
i = " - 1
End If
Loop
For i = 1 To 5
List2.AddItem  a(i)
Next i
数组元素a(0)到a(5)的值依次为“0,71,22,48,79,27”,经过该程序段“加工”后,数组元素a(4)的值为(    )
A.0B.71C.48D.27
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