Which system of equations can be graphed to find the solution(s) to $4 x^2=x^2+7$ ?
A$\left\{\begin{array}{l}y=3 x^2 \\ y=x^2+7\end{array}\right.$
B$\left\{\begin{array}{l}y=3 x^2+7 \\ y=x^2+7\end{array}\right.$
C$\left\{\begin{array}{l}y=4 x^2 \\ y=x^2+7\end{array}\right.$
D$\left\{\begin{array}{l}y=4 x^2 \\ y=4 x^2+7\end{array}\right.$
A$\left\{\begin{array}{l}y=3 x^2 \\ y=x^2+7\end{array}\right.$
B$\left\{\begin{array}{l}y=3 x^2+7 \\ y=x^2+7\end{array}\right.$
C$\left\{\begin{array}{l}y=4 x^2 \\ y=x^2+7\end{array}\right.$
D$\left\{\begin{array}{l}y=4 x^2 \\ y=4 x^2+7\end{array}\right.$