Aproductivity improvement will cause a. an upward shift in the saving-per-worker curve and an increase in the capital/labor ratio. b. a rightward movement along the saving-per-worker curve and an increase in the capital/labor ratio. c. a leftward movement along the saving-per-worker curve and a decrease in the capital/labor ratio. d. a downward shift in the saving-per-worker curve and a decrease in the capital/labor ratio.

The stock of grommet corporation, a u.s. company, is publicly traded, with no single shareholder owning more than 5 percent of its outstanding stock. grommet owns 95 percent of the outstanding stock of staple inc., also a u.s. company. staple owns 100 percent of the outstanding stock of clip corporation, a canadian company. grommet and clip each own 50 percent of the outstanding stock of fastener inc., a u.s. company. grommet and staple each own 50 percent of the outstanding stock of binder corporation, a u.s. company. which of these corporations form an affiliated group eligible to file a consolidated tax return?