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 given equation?

321 A 3 C 11 B 10 D 19 = (?)

Given: 321 A 3 C 11 B 10 D 19 = (?)

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

New equation: 321 ÷ 3 + 11 × 10 – 19 = ?

107 + 11 × 10 – 19 = ?

107 + 110 – 19 = ?

217 – 19 = ?

(?) = 198

Thus, option (a) is the correct answer.