Table 64 -Refer to Table 6

Multiple Choice

Table 6.4
$$\begin{array} { | c | c | } \hline \text { Chocolate Bars } & \text { Total Utility } \\\hline 1 & 10 \\\hline 2 & 25 \\\hline 3 & \\\hline 4 & 60 \\\hline 5 & 70 \\\hline\end{array}$$
-Refer to Table 6.4,which shows a utility schedule for a consumer's consumption of chocolate bars.If the marginal utility of consuming the third bar is 20,the total utility derived from the consumption of three chocolate bars is _____ units.

A) 2
B) 70
C) 45
D) 15
E) 10