The simplification of 53 + 31 - 2/3\, = ?

Answer: Option C

$$\begin{array}{rl}& \text{According to question,}\\ & \frac{5}{3+\frac{3}{1-\frac{2}{3}}}\\ & \Rightarrow \frac{5}{3+\frac{3}{\frac{1}{3}}}\\ & \Rightarrow \frac{5}{3+9}\\ & \Rightarrow \frac{5}{12}\end{array}$$