If the Production of a Sofa Requires the Purchase of 3

If the production of a sofa requires the purchase of 3 types of inputs and the production of a harp requires the purchase of 30 types of inputs,______

A) the harp-producing firm will buy the sofa-producing firm.
B) the sofa-producing firm will buy the harp-producing firm.
C) harp production will more likely be done through the hierarchy of firms.
D) sofa production will more likely be done through the hierarchy of firms.
E) both harp and sofa production will rely on market exchange because there is more than one input involved in each.