Answer:
Jack and the copy center are both liable to the author
Explanation:
In the scenario that is being described it can be said that Jack and the copy center are both liable to the author. Jack is liable for creating and selling copyrighted material that is not owned by him, while the Copy Center is liable for creating the photocopies of the book for Jack when it was obvious that Jack was planning on selling the copies when he asked for a total of 40 copies to be made.