The answer is A: According to Elana Martin, company spokesperson, "the error has not been traced to its ultimate source."
When citing the words of others, and in trying to avoid plagiarism, it is very important to give the reader all the necessary tools to find the source again and corroborate it. An element of a citation that should never be omitted is the name of the author of the words or ideas that are being cited. Another piece of information that is very helpful is to include the title or role of the author being cited in order to show the relevance of the quote.
