_______(1)_______ is used as a pre-selected background which will be replaced by _______(2)_______. a. (1) the green screen; (2) a fake background b. (1) the composite; (2) computerized actors c. (1) the green screen; (2) a cel animation d. (1) the composite; (2) pyrotechnics please select the best answer from the choices provided a b c d