The correct answer is D. According to Coast Guard regulations, the correct answer is D. The Coast Guard Regulations provide specific guidelines and requirements for obtaining a Captain's License, including the necessary qualifications, examinations, and procedures. The regulations outline the various license types, application process, and examination content that applicants must meet to obtain a valid Captain's License. The other options (A, B, and C) are incorrect as they do not accurately reflect the Coast Guard's regulations and requirements for the Captain's License examination.