For a horror film, Pauline wants to show a computer-generated monster appearing from the body of an actor. How can she do this?

A. use a green screen and film the actor then add the animated monster using the green screen

B. make the actor wear a green patch on his chest then add the animated monster on the green patch

C. make the scene of the actor opaque and add the scene of the monster as the bottom track

D. tween the actor and the animated head using a tweening software

E. film the head on a green screen and then add the actor to the background