Find the distance between parallel lines $15x+8y-34=0$ and $15x+8y+31=0$

Question

$\begin{array}{1 1}(A)\;\large\frac{-65}{17}\: units \\(B)\; \large\frac{65}{17}\: units \\(C)\; \large\frac{|65|}{17}\: units \\(D)\;\text{None of the above} \end{array}$