Table 23-4 -Refer to Table 23-4

Multiple Choice

Table 23-4
$$\begin{array} { | c | c | } \hline \begin{array} { c } \text { Consumption } \\\text { (dollars) }\end{array} & \begin{array} { c } \text { Disposable Income } \\\text { (dollars) }\end{array} \\\hline \$ 600 & \$ 1,000 \\\hline 900 & 1,500 \\\hline 1,200 & 2,000 \\\hline\end{array}$$
-Refer to Table 23-4.Given the consumption schedule in the table above,the marginal propensity to save is

A) 0.3.
B) 0.4.
C) 0.5.
D) 0.6.