Solve the Problem $S ( t )$ (In $\$ 1000$ ) $t$ Weeks After Launch Is Given By

Multiple Choice

Solve the problem.
-After a new product is launched the cumulative sales $S ( t )$ (in $\$ 1000$ ) $t$ weeks after launch is given by:
$$S ( t ) = \frac { 74 } { 1 + 14 e ^ { - 0.4 t } }$$
Determine the cumulative amount in sales 4 weeks after launch. Round to the nearest thousand.

A) $\$ 19,000$
B) $\$ 1,000$
C) $\$ 55,000$
D) $\$ 10,000$