Detailed Answer
(a) Since January 1, 1978, this is the life of a copyright.
Answer (b) is incorrect because the copyright is valid when the
author puts the work of art in tangible form. Answer (c) is incorrect
because works published after March 1, 1989 no longer require
a copyright notice placed on them. Answer (d) is incorrect
because under current copyright law, (b) and (c) are no longer
required.