单项选择题

在窗体上画一个名称为Commandl的命令按钮。有下列程序:
Option Base 1
Private Sub Command1_Click()
Dim a
a=Array(45,27,34,24,91,37,11,67,82,63)
For i = 1 To 9
For i = i + 1 To 10
If a(i)> a(j)Then
a1 = a(i)
a(i) = a(j)
a(j) = a1
End If
Next j
Next i
For i = 1 To 10
Print a(i)
Next i
End Sub
程序运行后,单击命令按钮,则窗体上第2行和第3行显示的内容是

A.27和34
B.34和24
C.45和63
D.24和27