Consider the following simultaneous equations, where $p$ is a real number:
$$\begin{array} { r }
p 2 ^ { x } + \log _ { 2 } y = 2 \\
2 ^ { x } + \log _ { 2 } y = 1
\end{array}$$
What is the complete range of $p$ for which these simultaneous equations have a real solution $( x , y )$ ?
A $p < 1$\\
B $p \neq 1$\\
C $p > 1$\\
D $p < 1$ or $p > 2$\\
E $\quad p \neq 1$ and $p < 2$\\
F $p > 1$ and $p < 2$\\
G $p > 2$\\
H All real values of $p$