(Figure: Utility Table 0) Using the Information in the Table

(Figure: Utility Table 0) Using the information in the table above, what is the total utility for the first unit?
$\begin{array}{|l|l|l|}\hline \mathbf{Q} & \mathrm{TU} & \mathrm{MU} \\\hline 0 & 0 & 0 \\\hline 1 & 12 & b \\\hline 2 & 20 & c \\\hline 3 & d & 2 \\\hline 4 & e & 1 \\\hline\end{array}$

A) 0
B) 12
C) 20
D) 22