What Is the Optimal PEEP Level Given the Following Information

Multiple Choice

What is the optimal PEEP level given the following information?
$\begin{array} { | l | l | l | l | l | l | l | } \hline \text { Time } & \text { 0600 } & 0615 & 0625 & 0635 & 0640 & 0650 \\\hline \mathrm { PEEP } ^ { 0 } & 0 & 5 & 8 & 10 & 12 & 15 \\\hline \mathrm { P } _ { \mathrm { Z } } \left( \mathrm { F } _ { \mathrm { I } } = 0.6 \right) & 50 & 62 & 75 & 81 & 86 & 103 \\\hline \mathrm { C } _ { 1 } \left( \mathrm { \pi L } / \mathrm { cm } \mathrm { H } _ { 2 } \mathrm { O } \right) & 16 & 21 & 28 & 38 & 34 & 30 \\\hline \mathrm { BP } & 140 / 90 & 130 / 90 & 120 / 90 & 120 / 90 & 118 / 80 & 100 / 70 \\\hline\end{array}$

A) 8 cm H₂O
B) 10 cm H₂O
C) 12 cm H₂O
D) 15 cm H₂O