Which among the following is the correct way to express change of inv…

Change of inventories of a firm during a year (value added - intermediate goods used by the firm + sale of the firm during a year)

Change of inventories of a firm during a year (value added + intermediate goods used by the firm + sale of the firm during a year)

Change of inventories of a firm during a year (value added - intermediate goods used by the firm - sale of the firm during a year)

Change of inventories of a firm during a year (value added + intermediate goods used by the firm - sale of the firm during a year)