在窗体上画一个名称为Command1的命令按钮，然后编写如下事件过程：
Private Sub Command1_Click()
Dim m As Integer, i As Integer, x(3)As Integer
For i = 0 To 3: x(i)= i: Next i
For i = 1 To 2: Call sub1(x, i): Next i
For i = 0 To 3: Print x(i);: Next i
End Sub
Private Sub sub1(a( )As Integer, k As Integer)
Dim j As Integer
Do
a(k)= a(k)+ a(k + 1)
j = j + 1
Loop While j ＜ 2
End Sub
程序运行后，单击命令按钮，则窗体上显示的内容是________。
A．0 3 7 5
B．0 1 2 3
C．3 2 4 5
D．0 5 8 3
