You are developing an ASP.NET Web page. You add a data-bound GridView control. The GridView contains a TemplateField that includes a DropDownList. You set the GridViews ClientIDMode property to Static， and you set the ClientIDRowSuffix property to ProductID. You need to be able to reference individual DropDownList controls from client-side script by using the ProductID. What should you set the ClientIDMode property of the DropDownList to？ （）
- AAutoID
- BStatic
- CInherit
- DPredictable