C:8-8 P Corporation has owned all the stock of S and T Corporations for several years. P sells all of T's stock to Z Corporation during the current year. a. Does P's sale of T's stock cause the affiliated group to cease to exist? b. Is T required to file a consolidated tax return with Z? c. If P purchases all of T's stock from Z three years after it sells T's stock to Z, is T required to file a consolidated tax return with P and S? d. How would your answers change if P did not own any of S's stock