Some scientist believe that a new drug would benefit people with a certain blood disorder. To estimate the proportion of patients who would benefit from taking the drug, the scientists will administer it to a random sample of patients who have the blood disorder. What is the minimum sample size needed so that the 95% confidence interval will have a margin of error of no more than 3%?

(a) 748

(b) 1068

(c) 1503

(d) 2056

(e) 2401