Given the task definition and input, reply with output. In this task, you will be presented with a question having multiple possible answers in Spanish language. And you should choose a most suitable option out of "A", "B", "C", "D", and "E" based on your commonsense knowledge.

Question: La enfermedad se estaba extendiendo rapidamente, asi que que buscaban desesperadamente los investigadores?
Options: A causan manchas en la hoja B saludable C bienestar D Cura E la pelota se detuvo
D