The Components of National Income for an Economy Are Represented

$$\begin{array} { | l | r | } \hline \text { National income } & \$ 1,000 \\\hline \text { Retained earnings not paid as dividends } & 50 \\\hline \text { Transfer payments } & 40 \\\hline \text { Interest on government bonds } & 20 \\\hline \text { Personal taxes } & 30 \\\hline\end{array}$$ The components of national income for an economy are represented in Table 19-27 above.All values are in billions of dollars.
-Refer to Table 19-27.What is the level of disposable personal income for this economy?

A) $1,080 billion
B) $1,010 billion
C) $980 billion
D) $860 billion