In a certain theater, the seats are divided into sectors. The figure presents the view of sector 3 of this theater, in which the dark chairs are reserved and the light ones have not been sold.
The ratio that represents the quantity of reserved chairs in sector 3 in relation to the total number of chairs in that same sector is
(A) $\frac{17}{70}$
(B) $\frac{17}{53}$
(C) $\frac{53}{70}$
(D) $\frac{53}{17}$
(E) $\frac{70}{17}$