A Company Introduces a New Product for Which the Number $S ( t ) = 300 \left( 5 - \frac { 10 } { 3 + t } \right)$

Multiple Choice

A company introduces a new product for which the number of units sold S is $S ( t ) = 300 \left( 5 - \frac { 10 } { 3 + t } \right)$ where $t$ is the time in months since the product was introduced. During what month does $S ^ { t } ( t )$ equal the average value of $S ( t )$ during the first year?

A) October
B) July
C) December
D) April
E) March