Mateo Is Designing a Technical Diagram That Many Textbook Publishers

Multiple Choice

Mateo is designing a technical diagram that many textbook publishers can use, and he wants to make sure he retains the rights to the diagram before selling it.At what stage does a copyright for his creative work come into effect?

A) As soon as he conceives the idea of the diagram
B) As soon as the image exists in physical form
C) As soon as someone wants to use it
D) As soon as he requests payment