(Table) the Table Shows the Production Possibilities Schedule for Guns

(Table) The table shows the production possibilities schedule for guns and butter. The opportunity cost of increasing gun production from 100 units to 200 units is: $$\begin{array} { l l c c c c c c } \text { Guns (hundreds) } & 6 & 5 & 4 & 3 & 2 & 1 & 0 \\\text { Butter (tons) } & 0 & 5 & 10 & 15 & 20 & 25 & 30\end{array}$$

A) 0 tons of butter.
B) 5 tons of butter.
C) 10 tons of butter.
D) 15 tons of butter.