Select the correct answer. Porter is studying the influenza pandemic of World War I. He is examining letters, journal entries, autobiographies, and newspaper articles from that time to see how fear of the disease affected the daily life of millions of people throughout Europe during that era. Which statement describes the type of history Porter is writing? A. Porter is writing social history because he is focusing on lives of large numbers of ordinary people. B. Porter is writing medical history because he is focusing on the cause of the epidemic and the number of people who died. C. Porter is writing cultural history because he is focusing on how the epidemic was portrayed in literary sources. D. Porter is writing economic history because he is focusing on the cost of developing vaccines. E. Porter is writing biography because he is focusing on the actions of certain individuals.