If F means '-', C means '×', D means '÷', B means '+', then what will come in place of the question mark (?) in the following equation?
44 F 18 C 3 B 108 D 6 = ?

Given:

44 F 18 C 3 B 108 D 6 = ?

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

44 F 18 C 3 B 108 D 6 = ?

After interchanging the sign we get following equation - 
44 - 18 × 3 + 108 ÷ 6 = ?
44 - 54 + 18 = ?
62 - 54 = ?
8 = ?
Correct answer is (a) 8.