Given,$a(p+q)^2+2bpq+c=0$ and $a(p+r)^2+2bpr+c=0$.Then the value of qr is

Question

$\begin{array}{1 1}(A)\;p^2+\large\frac{c}{a}&(B)\;p^2+\large\frac{a}{c}\\(C)\;p^2+\large\frac{b}{a}&(D)\;p^2+\large\frac{a}{b}\end{array}$