According to the passage, the delay referred to in the passage is perhaps attributable to which of the following? A. King's ambivalence concerning the role of the United States in the war in Vietnam B. King's attempts to consolidate support for his leadership within the civil rights movement C. King's desire to keep the leadership of the civil rights movement distinct from that of the antiwar movement D. King's desire to draw support for the civil rights movement from the leadership of the antiwar movement E. King's reluctance to jeopardize federal support for the civil rights movement