Refer to the Given Data for a Hypothetical Economy

Multiple Choice

$$\begin{array} { | c | r | } \hline \text { Disposable Income } & \text { Saving } \\\hline \$ 0 & - \$ 10 \\\hline 50 & 0 \\\hline 100 & 10 \\\hline 150 & 20 \\\hline 200 & 30 \\\hline\end{array}$$ Refer to the given data for a hypothetical economy. At the $100 level of income, the average propensity to save is

A) 0.10.
B) 0.20.
C) 0.25.
D) 0.90.