The demand curve an oligopolist faces is kinked at the current price when other firms into the industry: (1) face unitary elasticity of demand at their current output levels.(2) will match any price cuts although not price hikes. (3) follow only the dominant firm's price leadership. (4) will match price increases although not price cuts. (5) have higher costs or technologically obsolete production facilities.
Can anybody suggest me the proper explanation for given problem regarding Economics generally?