s=″I like IT very much″

flag=False:m=0

For i=1 To Len(s)

ch=Mid(s,i,1)

If ch>=″a″ And ch<=″z″ Then

If Not flag Then

   m=m+1

   flag=True

End If

Else

flag=False

End If

Next i

Text1.Text=Str(m)

a = 3

b = 9

c = a + b

If c = 12 Then py = "正确" Else py = "不正确"

分析该程序段，下列说法正确的是（  ）

    s = Text1.Text: sum = 0: t = 0: cnt = 1

    For i = 1 To Len(s)

      c = Mid(s, i, 1)

      If c >= "0" And c <= "9" Then

        j=j+1

      Else

        If cnt Mod 2 = 1 Then sum = sum + val(mid(s,i-j,j))

        j= 0：cnt = cnt + 1

      End If

    Next i

在文本框text1输入“12d6a3c4f20”，程序运行后sum的值是（  ）

a=356

b=365

a=b

print(a)