Which of the Following Is True of the Islamic Law

Which of the following is true of the Islamic law of Shari'a?

A) The Shari'a disallows making a reasonable profit from the sale of goods and services.
B) All Islamic countries strictly follow the Shari'a to govern all aspects of life.
C) The Shari'a encourages riba through the strict payment and collection of interest on loans within stipulated periods of time.
D) The Shari'a is primarily used in the areas of marriage; divorce; inheritance; and, to a limited degree, criminal law.