tooltip for dynamically generated @html.dropdown control in mvc4

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MVC4

Hi Expert!

I'm working on web project in mvc 4 with razor c#. I have used @Html.DropDownList that display item dynamically. I want to set tooltip for every item of @Html.DropDownList. My line of code as below

@Html.DropDownList("Config_Industry", ViewBag.Industry as IEnumerable<SelectListItem>, "Please Choose Item", new
{
@class = "drpDownCustomEngineered",
@style = "width: 258px;"

})

Please help me!

Thanks in advance