单项选择题

阅读程序: Option Base 1 Dim art()As Integer Private Sub Form_Click() Dim i As Integer,j As Integer ReDim arr(3,2)  For i=1 To 3    For j=1 To 2     arr(i,j)=i*2+j    Next   Next ReDim Preserve ale(3,4)  For j=3 To 4    arr(3,j)=j+9  Next  Print arr(3,2)+arr(3,4) End Sub 程序运行后,单击窗体,输出结果为

A.21
B.13
C.8
D.25