Answer: D. Both A and C
Explanation: When you use someone's idea or quotes without giving proper credit, without acknowledging or citing the original author; that is plagiarism. If you want to evade any accusations of Plagiarism, you must properly give citations of any wordings or ideas that are not your own by putting them in quotations as well as writing the name of the author and date of publication.
Option A cited the author but did not put the statement in quotation which translates that those statements are his own ideas but the reverse the case, resulting to plagiarism
In option B, the author was properly cited and the statements were in quotation and that is not Plagiarism.
Option C neither cited nor put the statement in quotation which also resulted in Plagiarism.
So both A and C are plagiarism.
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