Exhibit 2-1 Production Possibilities Curve Data -In Exhibit 2-1, According to the Information, the Opportunity Cost

Exhibit 2-1 Production possibilities curve data $$\begin{array} { | c | c | } \hline \begin{array} { c } \text { Consumption } \\\text { Goods }\end{array} & \begin{array} { c } \text { Capital } \\\text { Goods }\end{array} \\\hline 10 & 0 \\9 & 1 \\7 & 2 \\4 & 3 \\0 & 4 \\\hline\end{array}$$
-In Exhibit 2-1, according to the information, the opportunity cost of producing 3 units of capital is:

A) 3 units of consumption goods.
B) 4 units of consumption goods.
C) 6 units of consumption goods.
D) 7 units of consumption goods.