What is the population in the study? OA. Undergraduates who attend a college and have taken a course in conversational English. B. Undergraduates who attend a college and live outside the United States and have taken a course in conversational English. OC. Undergraduates who attend a college. D. Undergraduates who attend a college and live outside the United States. What is the sample in the study? OA. Undergraduates who attend a college. OB. Undergraduates who attend a college and live outside the United States. OC. The 1446 undergraduates who attend a college and have taken a course in conversational English. OD. The 1446 undergraduates who attend a college and live outside the United States.