Which of the following is true? O A. A customs union imposes a common external tariff on goods imported into the customs union while maintaining tariffs on the exchange of goods between participating countries. B. A customs union imposes a common external tariff on goods imported into the customs union and eliminates tariffs on the exchange of goods between participating countries. C. A customs union imposes common policies for the internal operation and integration of the combined market between the participating countries. D. Both A and C are true E. None of the answers are true 1 points San QUESTION 19 Which of the following statements is true? A. All laws are rules but not all rules are laws B. A law is a rule that can be enforced by the courts C. One source of our domestic law is legislation passed by either the federal or provincial government D. All of the statements are true E. None of the statements are true