In a survey of 3228 adults aged 57 through $5 years , it was found that $4 . 7% of them used at least one prescription medication . Complete parts ( a ) through ( C ) below . a . How many of the 32 28 subjects used at least one prescription medication ?" \\\\ ( Round to the nearest integer as needed . ) b . Construct a 90%/ confidence interval estimate of the percentage of adults aged 57 through $5 years who use at least one prescription medication. ( Round to one decimal place as needed . !" C. What do the results tell us about the proportion of college students who use at least one prescription medication ?" O A. The results tell us that , with 90% confidence , the probability that a college student uses at least one prescription medication is in the interval found in part ( 6 ) . O B . The results tell us that , with 90% confidence , the true proportion of college students who use at least one prescription medication is in the interval found in part ( 6 ). O .C . The results tell us nothing about the proportion of college students who use at least one prescription medication . O D . The results tell us that there is a 90%/ } probability that the true proportion of college students who use at least one prescription medication is in the interval found in part ( 6) Click to select your answer ( 5)