The Federal Fair Housing Act of 1968 has certain exemptions. Which of the following activities fall under one of the exemptions?
A. Refusing to show homes to a couple based on their race.
B. Refusing to sell a listed property to a Russian family using the services of a real estate broker.
C. Refusing to lease a unit in a large apartment building to a family with five children.
D. Excluding certain tenants in a four-family dwelling where one unit is owner-occupied and the