$\backslash$begin$\{$tabular$\}\{|$c$|$c$|$c$|\}$

$\backslash$hline Output & $\backslash$begin$\{$tabular$\}\{$c$\}$

Total Fixed $\backslash \backslash$

Quantity

$\backslash$end$\{$tabular$\}$ & $\backslash$begin$\{$tabular$\}\{$c$\}$

Total Variable $\backslash \backslash$

Cost

$\backslash$end$\{$tabular$\}\backslash \backslash$

$\backslash$hline $0$ & $\backslash (\backslash$$ $100\backslash )$ & $\backslash (\backslash$$ $0\backslash )\backslash \backslash$

$1$ & $100$ & $50\backslash \backslash$

$2$ & $100$ & $84\backslash \backslash$

$3$ & $100$ & $108\backslash \backslash$

$4$ & $100$ & $127\backslash \backslash$

$5$ & $100$ & $150\backslash \backslash$

$\backslash$hline

$\backslash$end$\{$tabular$\}$

As shown in Exhibit $7-9,$ the marginal cost of producing the third unit is:

a$.\backslash (\backslash$$ $24\backslash ).$

b$.\backslash (\backslash$$ $50\backslash ).$

c$.\backslash$$$16.$

d$.\backslash (\backslash$$ $23\backslash ).$