I'm not sure but i think it would be B.
        
                    
             
        
        
        
Lewis and Clark expedition
        
             
        
        
        
 Andrew Carnegie was an American industrialist who amassed a fortune in the steel industry then became a major philanthropist. Carnegie worked in a Pittsburgh cotton factory as a boy before rising to the position of division superintendent of the Pennsylvania Railroad in 1859.
 
        
                    
             
        
        
        
3% percent is the 6 because of the 5% percent