Assume That a Government Is Considering a New Social Program

Assume that a government is considering a new social program and may choose to include in this program one of four progressively larger projects. The marginal cost and the marginal bene?ts of each of the four
Projects are given in the table below.
$$\begin{array} { | c | c | c | } \hline \text { Project } & \text { Marginal Cost } & \text { Marginal Benefit } \\\hline A & \$ 1 \text { Billion } & \$ 2 \text { Billion } \\\hline B & 2 \text { Billion } & 3 \text { Billion } \\\hline C & 5 \text { Billion } & 7 \text { Billion } \\\hline D & 7 \text { Billion } & \text { 8 Billion } \\\hline\end{array}$$ Refer to the provided table and information. What is the net bene?t of project D?

A) $1 billion
B) $15 billion
C) $5 billion
D) $20 billion