Marketing Experiments,the Independent Variable Is the __________ and the Dependent

Multiple Choice

marketing experiments,the independent variable is the __________ and the dependent variable is the __________.

A) element that never changes; the element that always changes
B) result; factor beyond the experimenter's control
C) result of an action; cause of an action
D) cause of an action; result of an action
E) element that always changes; element that never changes