Suppose that in a national election in which two​ candidates, A and​ B, are running for​ office, 52% of the population is in favor of Candidate A. A random sample of 1200 registered voters reveals that 588 are in favor of Candidate A. ​(a) What is the variable of interest in this​ study? ​(b) Describe the sampling distribution of the sample proportion. ​(c) What is the probability that in a random sample of 1200 registered​ voters, 588 or fewer are in favor of Candidate​ A? ​(d) Interpret the probability from part​ (c). ​(a) Choose the correct answer below. A. The number of votes earned by Candidate A B. The number of votes earned by Candidate B C. Whether the voter favors Candidate A D. Whether the voter favors Candidate B