with explanation

9. A professional engineer (P.E.) is a person who is licensed to practice engineering after meeting all requirements of the law. Which of the following statement is true: (5 points) (A) To practice in multiple states or territories, the P.E. must be licensed in each state in which he or she wishes to practice. (B) Once a person gets a PE license, he or she can practice engineering in any states. (C) A licensed PE is not allowed to practice engineering in multiple states. (D) PE license never expires