单项选择题

下面程序运行时，若输入“Visual Basic Prograrmming”，则在窗体上输出的是( )
Private Sub Command1_Click()
Dim count(25)As Integer,ch As String
ch=Ucase(InputBox("请输入字母字符串"))
For k=1 To Len(ch)
n=Asc(Mid(ch,k,1))-Asc("A")
If n＞＝0 Then
count(n)一count(n)+1
End If
Next k
m=count(0)
For k=1 To 25
If m＜count(k) Then
m=count(k)
End If
Next k
Print m
End Sub