I have a problem in economics on Bilateral Monopoly problem. Please help me in the following question. The bilateral monopoly is in operation when: (1) The firm is mere employer of some labor force and a union is the mere supplier of the labor for that firm (2) The firm is the mere producer of the two complementary goods. (3) The monopolist sells good to the purely competitive buyers. (4) Some firms control the output of one product.
Select the most appropriate option from the above.