Given the position equation $s\left(t\right)$, calculate the average velocity (in meters per second) based on the given interval, and the instantaneous velocity (in meters per second) at the end of the time interval.
$s\left(t\right)=9t-t^2$, $0\le t\le3$

• A. Average: $v_{avg}=6\frac{m}{s}$, Instantaneous: $v\left(3\right)=3\frac{m}{s}$
• B. Average: $v_{avg}=10\frac{m}{s}$ , Instantaneous: $v\left(3\right)=18\frac{m}{s}$
• C. Average: $v_{avg}=18\frac{m}{s}$ , Instantaneous: $v\left(3\right)=10\frac{m}{s}$
• D. Average: $v_{avg}=6\frac{m}{s}$ , Instantaneous: $v\left(3\right)=0$