Would a union of all the restaurant workers in your area be more or less successful at winning wage increases without suffering employment losses than a union of all the pizzeria workers in your area? Explain

A union's success depends on the elasticity of demand for the good being produced. The less elastic is the
demand for the good being produced, the more successful the union will probably be at winning wage
increases without suffering major employment losses. Therefore, the union of all the restaurant workers
would probably be more successful than the union of all pizzeria workers, since the demand for restaurant
meals in general is less elastic than the demand for any specific type of restaurant meal, such as pizza .