Detailed Solution:
The correct answer is “A is true but R is false”.
Approximately 2% of the global population is made up of international migrants.
While Oceania does have a significant migrant population, regions like the Middle East and North America have a higher percentage of migrants relative to their total population.
While the United States has the highest number of migrants overall, Gulf nations like the United Arab Emirates (88%) and Qatar(77%) have the highest percentage of migrants relative to their total population.