The correct answer is D. All of the above.
A. Asking questions is a direct way to elicit information from users. This can be done through interviews, surveys, or focus groups.
B. Obtaining information from the present system can also be helpful in understanding user requirements. This can be done by analyzing the system’s logs, user interface, and documentation.
C. Prototyping is a way to create a working model of the system that can be used to get feedback from users. This can help to identify potential problems and ensure that the system meets user needs.
It is important to use a variety of methods to elicit information from users in order to get a complete picture of their requirements.