If p^2 + q^2 = 7pq , then the value of p/q + q/p is equal to?

Answer: Option C

$$\begin{array}{rl}& p^2+q^2=7pq\\ & \frac{p}{q}\text{ + }\frac{q}{p}=7\end{array}$$
(Divide whole equation by pq)