Solve the Problem $\mathrm { f } ( \mathrm { t } ) = \frac { 16,000 } { 1 + 399.0 \mathrm { e } ^ { - 1.2 t } }$

Multiple Choice

Solve the problem.
-The logistic growth function $\mathrm { f } ( \mathrm { t } ) = \frac { 16,000 } { 1 + 399.0 \mathrm { e } ^ { - 1.2 t } }$ models the number of people who have become ill with a particular infection t weeks after its initial outbreak in a particular community. How many people became ill with this infection when the epidemic began?

A) 40 people
B) 16,000 people
C) 399 people
D) 400 people