Imagine that a researcher wants to study the proportion of new diabetes diagnoses from year to year. She suspects that a greater percentage of people were diagnosed with diabetes this year compared to last year. She has complete data on diabetes diagnoses from last year. Determine the hypothesis test this researcher should use. Select from the list below.

A. one-sample, left-sided -test for a proportion

B. one-sample, right-sided -test for a proportion

C. one-sample, -confidence interval for a mean

D. one-sample, left-sided -test for a mean

E. one-sample, right-sided -test for a mean