What will come in the place of the question mark (?) in the following equation, if ‘+’ and ‘−’ are interchanged and ‘×’ and ‘÷’ are interchanged?
173 ÷ 3 − 135 × 5 + 17 = ?​

Given: 173 ÷ 3 − 135 × 5 + 17 = ?

​$$\begin{array}{|c|c|} \hline\textbf{Operation preference wise} & \textbf{Symbol} \\\hline\text{Brackets} &[],{}, () \\ \hline \text{Orders, of} & (power), √ (root) , of \\ \hline \text{Division}& ÷ \\ \hline \text{Multiplication} & × \\ \hline \text{Addition} & + \\ \hline \text{Subtraction} & - \\\hline \end{array}$$​​

New equation: 173 × 3 + 135 ÷ 5 − 17 = ?

173 × 3 + 27 − 17 = ?

519 + 27 − 17 = ?

546 − 17 = ?

Thus, correct option is (a).