Use the Given Tabular Representation of the Function $f$ To Compute $f ( 2,4 ) - f ( 4,2 )$

Use the given tabular representation of the function $f$ to compute $f ( 2,4 ) - f ( 4,2 )$ . $$\begin{array} { | l | l | l | l | l | l | } \hline & & \boldsymbol { x } & & & \\\hline & & \mathbf { 2 } & \mathbf { 4 } & \mathbf { 6 } & \mathbf { 8 } \\\hline \boldsymbol { y } & \mathbf { 2 } & - 5 & 197 & 185 & - 5 \\\hline & \mathbf { 4 } & - 9 & 191 & 100 & - 4 \\\hline & \mathbf { 6 } & - 20 & 201 & 225 & - 19 \\\hline & \mathbf { 8 } & - 19 & 216 & 235 & - 18 \\\hline\end{array}$$

A) -206
B) 188
C) 197
D) 206
E) -9