Given the task definition and input, reply with output. 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.

An army of health workers has been desperately trying to stop the spread of a deadly MERS outbreak which has so far killed 11 and infected at least 126 in South Korea. Dressed head-to-toe in protective clothing, they have been spraying antiseptic gas in open spaces, subways, class rooms, shopping malls and even movie theatres in the capital Seoul. Nearly 4,000 people have been quarantined since the first case was discovered just over three weeks ago and two hospitals treating the infected were shut down today - after four new cases were discovered. A 72-year-old woman became the latest fatality today after being infected by a MERS patient at a hospital, the Ministry of Health and Welfare said.11 killed, 126 infected, 4,000 quarantined since first case three weeks agoTwo hospitals treating sufferers sealed off today after new cases surfacedHealth workers sprayed the streets with antiseptic gas to stop it spreadingVirus brought into country from Saudi Arabia by 68-year-old businessman 
 Questions:The outbreak is the largest outside _ where the disease was first identified in humans in 2012. (A) MERS (B) South Korea (C) Seoul (D) Ministry of Health and Welfare (E) Saudi Arabia

(E)