A.
var div1 = document.createElement("div");document.body.appendChild(div1);
B.
var div1 = document.createElement("div");document.body.deleteChild(div1);
C.
ar div1 = document.createElement("div");document.body.removeChild(div1);
D.
var div1 = document.createElement("div");document.body.replaceChild(div1);