A research center conducts an extensive survey consisting of an interview and medical examination with a representative sample of about 5000 people a year. The interview includes demographic, socioeconomic, dietary, and other health-related questions. The examination consists of medical, dental, and physiological measurements, as well as laboratory tests administered by highly trained medical personnel. Describe the sample, the population, the Who and the What of this study. OD Describe the sample and the population. Choose the correct answer below. O A. In this case, the sample and population are both the 5000 people each year that partake in this survey. O B. The population is the 5000 people each year that partake in this survey. The sample is the number of individuals that are in a certain demographic. O C. The population is all the employees at the research center. The sample is the group of employees that actually conducted the survey. O D. The population is all people. The sample is the 5000 people each year that partake in this survey. Describe the Who and the What of this study. Choose the correct answer below. O A. The Who is the highly trained medical personnel; the What is the survey O B. The Who is the selected subjects; the What is the survey O C. The Who is the selected subjects; the What includes medical, dental, and physiological measurements and laboratory test results O D. The Who is all people; the What includes medical, dental, and physiological measurements and laboratory test results