If 45 - [ 28 - \ 37 - ( 15 - * ) \ ] = 58 then * equal to?

Answer: Option C

$$\begin{array}{rl}& \text{Let,}\\ & 45-\left[28-\left\{37-\left(15-x\right)\right\}\right]=58\\ & \text{then,}\\ & \text{45}-\left[28-\left\{37-15+x\right\}\right]=58\\ & \Rightarrow 45-\left[28-\left\{22+x\right\}\right]=58\\ & \Rightarrow 45-\left[28-22-x\right]=58\\ & \Rightarrow 45-\left[6-x\right]=58\\ & \Rightarrow 45-6+x=58\\ & \Rightarrow 39+x=58\\ & \Rightarrow x=58-39\\ & \Rightarrow x=19\end{array}$$