Detailed Instructions: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Among the entities, try to find the best entity that is most likely to fill in "_" and classify the answers based on options.
Q: (CNN) -- North Korea stirred up fresh unease in Northeast Asia early Thursday, threatening attacks by a "smaller, lighter and diversified" nuclear force and warning, "The moment of explosion is approaching fast." The new threat came after the North Koreans locked South Korean workers out of a joint factory complex and announced plans to restart a nuclear reactor it shut down five years ago. Meanwhile, the United States announced it was sending ballistic missile defenses to Guam, a Pacific territory that's home to U.S. naval and air bases. "The moment of explosion is approaching fast. No one can say a war will break out in Korea or not and whether it will break out today or tomorrow," North Korea's state news agency KCNA declared in its latest broadside. "The responsibility for this grave situation entirely rests with the U.S. administration and military warmongers keen to encroach upon the DPRK's sovereignty and bring down its dignified social system with brigandish logic."NEW: North Korea reportedly demands the withdrawal of South Korean workers from jointly run complexAnalyst says both sides need to cool the rhetoric"The moment of explosion is approaching fast," North Korea saysU.S. moves missile defense system to Guam 
 Questions:_ is short for Democratic People's Republic of Korea, the official name for North Korea. (A) CNN (B) North Korea (C) Northeast Asia (D) South Korean (E) United States (F) Guam (G) Pacific (H) U.S. (I) KCNA
A:
(B)