Two different concepts, copyright infringement and plagiarism, are often confused for each other. Copyright infringement deals with the unauthorized use of copyright material and hence the violation of the rights of the copyright holder. Plagiarism, on the other hand, is concerned with false claims of authorship of ideas, works etc. that may not necessarily be protected under copyright. Moreover, even if a person gets the permission to use copyright material, it may still account for plagiarism if the person tries to falsely claim the authorship of the material.
Which of the following must be true on the basis of the information given in the above argument?
A. Plagiarism may not always amount to copyright infringement but copyright infringement always amounts to plagiarism.
B. Any unauthorized use of material that has been protected under copyright will be considered plagiarism.
C. Under certain conditions, use of copyright free material can still be considered plagiarism.
D. Even authorized use of copyright material amounts to plagiarism.
E. In a court of law, it is easier to prove a case of copyright infringement than a case of plagiarism.