Aislinn is holding a pendulum. The function $D(t)$ models the horizontal distance, in $cm,$ of the end of the pendulum from their body $t$ seconds after releasing the end. $D(t)=35+9cos(2\mathrm{.}4t)$ What does the least positive solution for $38=35+9cos(2\mathrm{.}4t)$ represent? Choose $1$ answer: The set of all numbers of seconds when the pendulum is first $38cm$ from Aislinn's body The distance between the pendulum and Aislinn's body after $38$ seconds The number of seconds when the pendulum is first $38cm$ from Aislinn's body The average distance between the pendulum and Aislinn's body