What will come in place of the ‘?’ in the following equation, if ‘+’ and ‘−’ are interchanged and ‘×’ and ‘÷’ are interchanged?

56 + 12 − 54 × 18 ÷ 6 = ?​​

Given: 56 + 12 − 54 × 18 ÷ 6 = ?

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

 New Expression: 56 −12 + 54 ÷ 18 ×6 = ?

56 −12 + 3 × 6 = ?

56 −12 + 18 = ?

74 −12 = ?

Thus, correct option is (a)