Upon what specific assumptions is this production possibilities curve based?
a. investment, entrepreneurial ability, and full employment
b. land, full employment, fixed technology, and two goods
c. full employment, fixed supplies of resources, fixed technology, and two goods
d. land, labor, capital, and entrepreneurial ability

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?