In a psychological study, it is aimed to investigate the mental health of foreign university students in Hungary. Which of the following examples best describes the relationship between population and sampling frame?单项选择题

A

The sampling frame is the entire population in Hungary, and the population is all university students in Hungary

B

The samplig frame is all foreign university students in Hungary, and the population is all foreign university students in Budapest

C

The population is all residents in Hungary, and the sampling frame is all foreign residents in Hungary

D

The population is all foreign university students in Hungary, and the sampling frame is all foreign students at ELTE

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