Solve the Problem $t$ Days Is Modeled by the Function $P ( t ) = \frac { 160 } { 1 + 39 e ^ { - 0.3 t } }$

Multiple Choice

Solve the problem.
-The number of students infected with the flu on a college campus after $t$ days is modeled by the function $P ( t ) = \frac { 160 } { 1 + 39 e ^ { - 0.3 t } }$ . What was the initial number of infected students?

A) 4
B) 160
C) 8
D) 39