In the free labour market, the equilibrium wage is $12 per hour. Suppose the government considers imposing a minimum wage. What is an effective minimum wage? A. A minimum wage that can help poor people get a better paying job. B. A minimum wage that is equal to the value of work the workers can bring to the employer. C. A minimum wage that is below $12 per hour. D. A minimum wage that can cover all the basic living costs. E. A minimum wage that is above $12 per hour