Is it possible to extend an Enum to add elements?

Just because the question is simple and demands only a yes or no answer, you should still give it all the attention you would for a more complex and challenging question. Often, candidates become complacent during an interview and will only expend as much effort as necessary when answering an interviewer's question. Interviewers are trained to perceive this. If you're complacent in the interview, it may indicate that you will become complacent if hired for the job.

"No, it is not possible to extend Enum further in the code. It is defined only with the keyword Enum and filled with elements. However, these same elements cannot be added later in the program using some other method."