Aperfectly competitive firm that makes car batteries has a fixed cost of $10,000 per month. the market price at which it can sell its output is $100 per battery. the firm’s minimum avc is $105 per battery. the firm is currently producing 500 batteries a month (the output level at which mr = mc). this firm is making a and should production.

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?