We hold that in order to fulfill its obligation under § 1681i(a) “a credit reporting agency may be required, in certain circumstances, to verify the accuracy of its initial source of information.” Henson, 29 F.3d at 287. We further hold that “[w]hether the credit reporting agency has a duty to go beyond the original source will depend” on a number of factors. Id. One of these is “whether the consumer has alerted the reporting agency to the possibility that the source may be unreliable or the reporting agency itself knows or should know that the source is unreliable.” Id. A second factor is “the cost of verifying the accuracy of the source versus the possible harm inaccurately reported information may cause the consumer.” Id. Whatever considerations exist, it is for “the trier of fact [to] weigh the[se] factors in deciding whether [the defendant] violated the provisions of section 1681i.” Id.