The graph in Figure below models the spread of the Ebola Virus during an outbreak in Zaire. Discuss the disease's rate of increase changes over time. At what time is the rate of increase the highest? Explain. Figure: Number of Deaths Caused by Ebola Virus during Zaire Outbreak D (Number of Deaths) 300 y = D(t) 240 180 120 60 1 2 4 5 6 7 10 t (measured in weeks) Source: Center for Disease Control and Prevention (A) t = 1 week (B) t = 4 weeks (C) t = 5 weeks (D) t = 10 weeks (E) none of the above