If ‘A’ stands for ‘÷’, ‘B’ stands for ‘×’, ‘C’ stands for ‘+’ and ‘D’ stands for ‘–’, what will come in place of the question mark (?) in the following equation?
40 B 3 C 10 D 20 A 5 = ?

Given: 40 B 3 C 10 D 20 A 5 = ?

Given equation is solve by BODMAS rule.

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

New equation: 40 × 3 + 10 - 20 ÷ 5 = ?

40 × 3 + 10 - 4 = ?

120 + 10 - 4 = ?

130 - 4 = ?

? = 126

Thus, correct option is (b).