Which of the following statements about plagiarism is most accurate?

(A) It is so easy to “copy and paste” from the internet that everyone does it nowadays. If a proper reference is given, where is the harm in that?
(B) How can we say for sure where our own ideas come from exactly? If we tried to give a reference for everything we could never hope to succeed.
(C) Any suggestion that we have written what another actually wrote is morally wrong. Anyway, the whole point of a literature review is to show what we have read and what we thought about it.
(D) Plagiarism is such an awful crime that those found guilty should be obliged to wear a
scarlet “P” on their clothing.