If A means + , B means - , C means ×, D means ÷, then what will come in place of the question mark (?) in the following equation?

​21 D 3 B 4 C 5 A 22 = ?​​​

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​21 D 3 B 4 C 5 A 22 = ?​

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

? = 7 - 4 ​× 5 + 22

? = 7 - 20 + 22

? = 29 - 20

​Thus, the correct answer is (c) 9.​​​