Knowing That Primary Sources Are Most Desirable, Journalists Avoid Quoting

Knowing that primary sources are most desirable, journalists avoid quoting other reporters' work. Do any of the following situations justify quoting stories from another news organization?

A) When a reporter is covering an important, fast-breaking news story, and another news organization posts an update, the reporter may refer to that update, and cite the source-although the reporter will still do his own original research to confirm the information.
B) When another news organization has a national and authoritative reputation, a journalist may freely quote from its stories.
C) When a reporter is on a tight deadline and can double-check that the information has appeared in at least two reputable news sites, the reporter may use information from either of those news sites.
D) None of the above