Current supply and output. Until recent years, Organization of Petroleum Exporting Countries (OPEC) often set supply through a quota system.
        
             
        
        
        
A. By eliminating the effects of price increases on GDP growth. Nominal GDP is calculated using the current prices while Real GDP is adjusted for inflation.
 
        
                    
             
        
        
        
This wouldn’t by chance have multiple choice options would it?
        
             
        
        
        
The most difficult to construct.