James Comes Across Jack Bleeding to Death in a Dark

James comes across Jack bleeding to death in a dark alley. Jack tells James that he was stabbed by a 6-foot-tall man wearing a green coat. James may

A) not testify in court because of the hearsay rule.
B) testify in court because of the dying declaration exception to the hearsay rule.
C) not testify in court because no one else was present when Jack spoke.
D) testify in court only if he had never met Jack before he found him in the alley.