现有JavaScript程序var x=prompt(“请输入1-5的数字!”,“”);switch (x){case “1”:alert(“one”);breakcase “2”:alert(“two”);break
case “3”:alert(“three”);break
case “4”:alert(“four”);break
case “5”:alert(“five”);break
default: alert(“none”);
}运行以上程序,在提示对话框中输入“4”,弹出的对话框将输出: ( ) A.

four B.

four,five,none C.

five D.

five,none