If$f(a)=2;f '(a)=1;(g)=(a)=-1;g '(a)=2$ then the value of $\;\lim \limits_{x \to 2}\Large\frac{g(x)f(a)-g(a)f(x)}{x-a}$ is

Question

\[\begin{array}{1 1}(1)5&(2)-5\\(3)3&(4)-3\end{array}\]