P, Q, R and S show the graphs of

$$y = ( \cos x ) ^ { \cos x } , y = ( \sin x ) ^ { \sin x } , y = ( \cos x ) ^ { \sin x } \text { and } y = ( \sin x ) ^ { \cos x }$$

for $0 < x < \frac { \pi } { 2 }$ in some order.

Which row in the following table correctly identifies the graphs?

\begin{center}
\begin{tabular}{|l|l|l|l|l|}
\hline
 & $y = ( \cos x ) ^ { \cos x }$ & $y = ( \sin x ) ^ { \sin x }$ & $y = ( \cos x ) ^ { \sin x }$ & $y = ( \sin x ) ^ { \cos x }$ \\
\hline
A & P & Q & R & S \\
\hline
B & P & Q & S & R \\
\hline
C & Q & P & R & S \\
\hline
D & Q & P & S & R \\
\hline
E & R & S & P & Q \\
\hline
F & R & S & Q & P \\
\hline
G & S & R & P & Q \\
\hline
H & S & R & Q & P \\
\hline
\end{tabular}
\end{center}