In a device sizing problem the goal is to minimize power consumption subject to the total area not exceeding 50, as well as some timing and manufacturing constraints. Four candidate designs meet the timing and manufacturing constraints, and have power and area listed in the table below. \[ \begin{array}{lll} {\rm Design} & {\rm Power} & {\rm Area} \\ \hline {\rm A} & 10 & 50 \\ \hline {\rm B} & 8 & 55 \\ \hline {\rm C} & 10 & 45 \\ \hline {\rm D} & 11 & 50 \\ \hline \end{array} \]
Design B is better than design A.