Inner Join Subquery data display

I have a query that uses a sub query on a INNER JOIN 

SELECT  SUM(A.qtyord), A.Item, A.Description, A.Class, B.Forecast, 
                CASE 
                        WHEN B.Forcast = 0
                THEN A.Item 
                ELSE 
                        CASE 
                        WHEN (SUM(A.ORDQ)/B.Forcase) > 0.20  
                        THEN A.Item 
                        ELSE '' 
                    END  
                END AS SKU
            FROM        tableA A
        INNER JOIN ((SELECT Item, ( SUM(BBAL) + SUM(RECV) + SUM(ADJU) - SUM(ALOC)) as onhand FROM tableD GROUP BY Item)) D ON A.Item = D.Item
        INNER JOIN tableB B ON A.Item=B.Item
        INNER JOIN tableC C ON B.Item=C.Item
    GROUP BY A.Item, A.Description, A.Class, B.Forecast
    ORDER BY A.Class DESC

How do I get the data from the sub query to display.