Which JavaScript code segment shows the correct way to set the value of a field that is formatted as a single line of text?

Which JavaScript code segment shows the correct way to set the value of a field that is formatted as a single line of text?
A. Xrm.Page.getAttribute("new_string").setValue("1234");
B. Xrm.Page.getAttribute("new_string").DataValue = "1234";
C. Xrm.Page.gctAttribute("new_string").setValue(1234);
D. Xrm.Page.getAttribute(Mnew_string").setValue() = ,,1234";