Paul is conducting a survey in his town to determine which candidates for mayor people intend to vote for in the next election. Which guideline should he follow in deciding on the size of the survey sample? A. The ratio of the sample size to the population should be as great as possible. B. The size of the survey sample should be identical to the entire target population. C. The size of the survey sample should be greater than the entire target population. D. The difference between the sample size and the population size should be as great as possible.