-The Table Above Lists Six Points on the Production Possibilities

$$\begin{array} { | l | l | l | } \hline \text { Point } & \begin{array} { l } \text { Production of grain } \\\text { (tons) }\end{array} & \begin{array} { l } \text { Production of cars } \\\text { (cars) }\end{array} \\\hline \text { A } & 0 & 30 \\\hline \text { B } & 2 & 28 \\\hline \text { C } & 4 & 24 \\\hline \text { D } & 6 & 18 \\\hline \text { E } & 8 & 10 \\\hline \text { F } & 10 & 0 \\\hline\end{array}$$
-The table above lists six points on the production possibilities frontier for grain and cars. Given this information, which of the following combinations is unattainable?

A) 6 tons of grain and 18 cars
B) 7 tons of grain and 10 cars
C) 2 tons of grain and 27 cars
D) 4 tons of grain and 26 cars