[单项选择题] 下列程序段的执行结果为______。Dim m(3，3)As IntegerDim i As Integer Dim j As Integer Dim x As Integer

[单项选择题] 下列程序段的执行结果为______。

Dim m(3，3)As Integer

Dim i As Integer

Dim j As Integer

Dim x As Integer

For i=1 To 3

m(i，i)=i

Next

For i= 0 To 3

For j= 0 To 3

x=x +m(i，j)

Next

Next

Print x

A． 3 B) 4 C) 5 D) 6