窗体上命令按钮Command1的事件过程如下: Option Base1 Private Sub Command1_Click() Dim a(4,4)As Variant For i=l To 4 For j=1 To 4 a(i,j)=(i-1)*3+j Next j Next i For i=3 To 4 For j=3 To 4 Print a(i,j) Next i Next i End Sub 该程序执行后,输出结果是( )。
A.9 10 12 13
B.7 10 12 13
C.9 12 10 13
D.8 11 9 12