下列程序段的执行结果为 Dim A(3，3) For M=1 To 3 For N=1 To 3 If N=M Or N=3-M+1 Then
A(M,N) =1
ElseA(M,N) =0
End If
Next N
Next M
For M=1 To 3
For N=1 To 3
Print A(M,N)
Next N
Print
Next M
Ａ) 1
0
0
0
1
0
0
0
0
Ｂ) 1
1
1
1
1
1
1
1
1
Ｃ) 0
0
0
0
0
0
0
0
0
Ｄ) 1 0 1
0 1 0
1 0 1