单项选择题

在窗体上画l个命令按钮和l个文本框,其名称为Command1和Text1,再编写如下程序:   Dim ss As String   Private Sub Text1 KeyPress(KeyAscii As Integer)    If Chr(KeyAscii)<>""Then ss=ss+Chr(KeyAscii)   End Sub   Private Sub Command1 Click()    Dim m As String,i As Integer    For i=Len(ss)To 1 Step-1    m=m+Mid(SS,i,1)    Next    Text1.Text=UCase(m)   End Sub   程序运行后,在文本框中输入“Number 100”,并单击命令按钮,则文本框中显示的就是( )。

A.NUMtBER l00
B.REBMUN
C.REBM UN l00
D.001 REBMUN