Answer:
a
Step-by-step explanation:
it's non-linear
 
        
                    
             
        
        
        
We have  .
.
First let us factor the 2 to obtain,
 
We can now see clearly that the expression inside the parentheses is a difference of two squares. 
We now write the 4 as 2². So that we obtain the expression,
 
Recall that

Hence our expression becomes,

Therefore, when factored completely,

 
        
             
        
        
        
I'm pretty sure it is 5:55 
        
             
        
        
        
B*D? 
B=-2
D=-6
B*D=(-2)*(-6)=12