A study examined the economic rewards of obtaining an MBA degree. The researchers made inferences based on wage data collected for a sample of individuals who sat for a particular examination required for most MBA programs. The researchers used data from an earlier article which used random sampling of those who took the exam during a selected time period to draw conclusions about the potential economic benefits of obtaining a an MBA degree. Complete parts Bold a through Bold c below. nothing nothing nothing nothing a. For this​ study, describe the population of interest. A. All people who have an MBA. B. All those who took the exam during the selected time period.