The Following Table Shows the Running Speed , in Centimeters

Multiple Choice

The following table shows the running speed , in centimeters per second, of ants as a func- tion of the temperature $T$ in degrees Celsius. Based on the regression equation, how fast would an ant run
When the temperature is 30.9 degrees Celsius? $$\begin{array} { | l | l | l | l | l | } \hline T & 25.6 & 30.3 & 32.3 & 34.8 \\\hline R & 2.88 & 3.04 & 4.21 & 5.07 \\\hline\end{array}$$

A) 4.4 centimeters per second
B) 4.79 centimeters per second
C) 3.63 centimeters per second
D) 3.89 centimeters per second