窗体上有一个名称为Combol的组合框，要求在其编辑区输入文本并按回车键后，编辑区中的文本被添加到列表中。下面能实现这一功能的是( )。

A．Private Sub Combol_KeyDown(KeyCode As Integer，Shift As Integer) If KeyCode=13 Then Combol．AddItem Combol．Text End If End Sub
B．Private Sub Combol_KeyDown(KeyCode As Integer，Shift As Integer) If KeyCode=13 Then Combol．Addltem Text1．Text End If End Sub
C．Private Sub Combol—Click() Combol．Addltem Combol．Text End Sub
D．Private Sub Combol—Click() Cornbol．AddItem Text1．Text End Sub