Table 192 In Table 19

Table 19.2 $\begin{array}{c}\begin{array}{|c|}\hline\text { Quantity Consumed }\\\hline1 \\\hline 2 \\\hline 3 \\\hline 4\\\hline\end{array}\begin{array}{c|}\hline\text { Total Utility}\\\hline15\\\hline\\\hline30\\\hline\\\hline\end{array}\begin{array}{c|}\hline\text { Marginal Utility}\\\hline15\\\hline9\\\hline\\\hline3\\\hline\end{array}\end{array}$

In Table 19.2,diminishing marginal utility occurs

A) With the second and fourth units only.
B) With the first and third units only.
C) Only with the second unit.
D) With all units after the first.