You could try doing something like this:
[HttpPost]
public ActionResult FromSelectedValues(clsMain model)
{
if (ModelState.IsValid)
{
for (int i =0; i < model.lstQuestion.Count; i++)
{
var selectedAnswer = model.SelectedAnswer[i];
}
}
return View();
}
}
PS: I never tested on that, but it should help you get started on how to go through it. Also, check this article for a reference on working with Radio Buttons in MVC:
Radio button list in ASP.NET MVC[
^]