Exhibit 6-2 Total Utility for Hamburgers, Fries, and Cokes -In Exhibit 6-2 Assume That the Price of Hamburgers Is

Exhibit 6-2 Total utility for hamburgers, fries, and Cokes $$\begin{array} { | c | c | c | } \hline \begin{array} { c } \text { T otal Utility } \\\text { from Hamburgers }\end{array} & \begin{array} { c } \text { Total Utility } \\\text { from Fries }\end{array} & \begin{array} { l } \text { Total Utility } \\\text { from Cokes }\end{array} \\\hline 1 \text { hamburger (100 utils) } & 1 \text { order of fries (30 utils) } & 1 \text { Coke (40 utils) } \\2 \text { hamburgers (180 utils) } & 2 \text { orders of fries } ( 50 \mathrm { utils } ) & 2 \text { Cokes } ( 60 \mathrm { util } \mathrm { s } ) \\3 \text { hamburgers (240 utils) } & 3 \text { orders of fries } 60 \mathrm { utils } ) & 3 \text { Cokes } ( 70 \mathrm { utils } ) \\\hline\end{array}$$
-In Exhibit 6-2 assume that the price of hamburgers is $2 each, fries cost 50 cents each, and Cokes cost $1 each. What is the marginal utility of having a second order of fries?

A) 10 utils.
B) 20 utils.
C) 30 utils.
D) 50 utils.