A civil war has broken out in the country of Mula, forcing thousands of Mulan refugees to flee to neighboring Sula. The Mulan refugees are highly skilled professionals, while the Sulan people are largely uneducated and work in agricultural professions. Which of the following describes the MOST likely socioeconomic effects of the Mulan refugees' move to Sula? I. The Mulan people will take over the labor force, leaving the Sula people at an economic disadvantage.
II. The Sulan government's spending on medical services will decrease as a result of the influx of Mulan people.
III. Sula will experience brain gain, which will boost the country's economy.
IV. The Sulan people will begin to resent the Mulan people, causing ethnic conflict.