In 217,Kelly Writes Like the Wind,a Novel About Marathoners and Ultra

In 217,Kelly writes Like the Wind,a novel about marathoners and ultra marathoners.Kelly does not register the work with the appropriate government office.Under federal copyright law,Kelly's work is protected

A) for ten years.
B) for twenty years.
C) for the life of the author plus seventy years.
D) until a revised or updated edition is issued.