If ‘+’ means ‘÷’, ‘-‘ means ‘+’, ‘×’ means ‘-‘ and ‘÷’ means ‘×’, then , what will be the value of the following expression? 

[{(12×3)-(2÷3)}+(1-4)]÷4

[{(12×3)-(2÷3)}+(1-4)]÷4

According to given information when change the sing the new sign is   

[{(12 - 3) + (2 × 3)} ÷ (1+4)] ×4

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

=[{9 + 6} ÷ 5] × 4

=[15 ÷ 5] × 4

= 3 × 4 = 12

Thus the correct answer is (A)