设窗体上有一个文本框Text1和一个命令按钮Command1,并有以下事件过程: Private Sub Command1_Click() Dim s As String,ch As String s = For k = 1 To Len(Text1) ch = Mid(Text1, k, 1) s = ch + s Next k Text1. Text = s End Sub 程序执行时,在文本框中输入“Basic”,然后单击命令按钮,则Text1中显示的是( )。
A) Basic
B) cisaB
C) BASIC D) CISAB