It 's Doctor Who , anyone can come back , anything can be undone , if Rose can come back from another dimension , the Master can survive the Time War and the Daleks can keep escaping certain extinction ... they can get around this plot point should it ever serve them .
According to the above context, choose the best option to answer the following question.
Question: what is the reason anyone can come back and anything can be done ?
Options:
A. None of the above choices .
B. The reason is they are psychic .
C. They have a contract to do this .
D. Doctor who is a fictional story where time travel and almost anything else is possible .


D