An Example of Intellectual Property Being Invaded Is That

An example of intellectual property being invaded is that:

A) a popular first name is used by millions of people;
B) a newly composed song is downloaded from the Internet by millions of users without permission from the composer;
C) users modify a Wiki-based system for the sake of their convenience;
D) a trial version software is widely used among various users;
E) a newly developed software is tested among real users in a real context.