Identify the correct statements: I. Picketing is a form of passing information from one person to another and involves disrupting normal business activities ; as such, it has the protection of the first amendment to our constitution. II. A strike is a concerted refusal to work in the usual manner by a group of employees. The strike may be lawful or unlawful, depending upon the status of the strikers, the objective(s) sought and the means employed by the strikers. III. Wildcat strike is an unlawful consented refusal to work by a group of employees. Employees engaged in a wildcat strike may be lawfully terminated by the employer. IV. Featherbedding is the unlawful practice of requiring employees to be retained and paid for work that is not done or not to be done.