When a survey question asked, "Do you believe in heaven?" and "Do you believe in hell?", 830 subjects answered "yes" to both questions, 161 answered "no" to both, 122 answered "yes" to heaven but "no" to hell, and 3 answered "no" to heaven but "yes" to hell. Complete parts a through e below. G a. Explain how we could regard either variable (opinion about heaven, opinion about hell) as a response variable. OA. Each variable could be used to explain the results of the other variable. OB. Each variable could be the outcome of interest, and the distribution of responses across the entire population could be studied. OC. Each variable could be the outcome of interest, and how it depends on the other could be studied. OD. Each variable could be the outcome of interest, and how they depend on a third variable could be studied.