The correct options are
A A person moving from an Indian village to Canada for work.
B A person moving from Canada to America for work.
If a person moves from one nation to another, it is called international migration. It changes the size of a country’s population. A person moving from Delhi to Mumbai and an American moving from California to New York for work are internal migrations, as both happen within the same country.
Internal migration does not change the size of the country’s population.