content area top Part 1 Executives at a large multinational corporation want to be able to predict the average revenue per month for the whole corporation for a given number of unpaid interns. Data on revenue left parenthesis in $ 1,000,000 s right parenthesis nbspand unpaid interns were collected for a sample of months. Complete parts a through c below. Question content area bottom Part 1 a) Which variable is the explanatory or predictor variable? A. The explanatory variable is revenue per month because the executives want to know how revenue per month depends on unpaid interns B. The explanatory variable is revenue per month because the executives want to know how unpaid interns depends on revenue per month. C. The explanatory variable is unpaid interns because the executives want to know how unpaid interns depends on revenue per month. D. The explanatory variable is unpaid interns because the executives want to know how revenue per month depends on unpaid interns