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) The United States eradicated malaria by spraying mosquito breeding grounds with DDT in 1951, roughly two decades after most of Western Europe eliminated the disease. History then offers hope, even as the world's first malaria vaccine, called RTS,S or Mosquirix, faces challenges: The effectiveness of the shot fades over time, according to a study released Wednesday. The vaccine's waning effect occurred especially among children living in areas with high rates of the disease. "Overall our study shows that RTS,S can benefit children, but suggests that a fourth dose may be important for sustaining this protection over the long term," Dr. Ally Olotu, lead author of the research published in the New England Journal of Medicine, said in a news release.A new study says the benefits of the world's first malaria vaccine weaken over yearsAnother trial is looking at expanded dosage of Mosquirix 
 Questions:The agency considered the safety profile of _ acceptable, even though data showed that it provided only modest protection against the most dangerous form of malaria in children. (A) United States (B) DDT (C) Western Europe (D) RTS,S (E) Mosquirix (F) RTS (G) Ally Olotu (H) New England Journal of Medicine
A:
(E)