The correct answer is D) All of the above. A compulsory vessel must satisfy certain equipment carriage requirements determined by the waters in which it operates (option A), it must be able to transmit and respond to distress alerts (option B), and it must carry at least two FCC licensed GMDSS radio operators (option C). These are all functional or carriage requirements for compulsory vessels. The other options are incorrect because they only address part of the requirements, while the correct answer encompasses all the necessary components for a compulsory vessel. The comprehensive answer is that a compulsory vessel must meet all these requirements to be in compliance with regulations.