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: The US has launched airstrikes against targets in Tikrit to support Iraqi ground forces trying to push ISIS militants out of the city, a senior official said. Iraq requested the strikes, which began Wednesday and are 'ongoing,' according to the unnamed US official. An Associated Press correspondent in Tikrit reported hearing warplanes overhead late Wednesday, followed by multiple explosions. Scroll down for video Stalled ground offensive: Smoke rose over Tikrit, where Iraqi security forces and Shiite militias have battled ISIS militants Iraq began the Tikrit ground offensive in early March without requesting US air support, even as it welcomed help from Iran.Iraq requested the airstrikes to support an offensive begun in early MarchAt the outset of the offensive, the Iraqi forces declined US-led coalition support though it looked to Iran for weapons and artilleryA Pentagon spokesman said the offensive has 'stalled' 
 Questions:That bombing targeted _ combat units and destroyed what the US called an ISIS 'fighting position,' as well as an ISIS armored vehicle. (A) US (B) Tikrit (C) Iraqi (D) ISIS (E) Iraq (F) Associated Press (G) Smoke (H) Shiite (I) Iran (J) Pentagon
A: 
(D)