It's "computers", because they're the subject of the verb to be.
I think.
 
        
             
        
        
        
Answer:
What is it you need help with though? I cant see them because of some odd reason. I would be glad to help but.
Explanation:
 
        
             
        
        
        
Answer:
B unknown it a right answer
 
        
                    
             
        
        
        
Need more information on this specific question please