please answer with a,b,c,d only. no explanation needed. thanks

18 Which filing must each publicly traded company in the United States make with the Securities and Exchange Commission (SEC) every quarter? 10-K O 8-K 010-0 08-0 19) What information does a manager obtain from a cost variance? The excess of the production cost over the administrative cost The difference between the financial cost and the managerial cost The difference between the actual cost and the budgeted cost The excess of the materials cost over the labor costs 20 Under which circumstance would a department report an unfavorable cost variance? When the production cost is $300,000 and the administrative cost is $40,000 When the actual cost is $500 and the budgeted cost is 5300 When the production cost is $20,000 and the administrative cost is $500.000 When the actual cost is $800 and the budgeted cost is $1,000 f