When a firm uses five laborers, it can produce 600 units daily. A sixth laborer allows the firm to produce 900 units daily. Which of the following is true regarding production? O The total product for the sixth laborer is 1,500 units. O The total product for the sixth laborer is 600 units. The average product for the sixth laborer is 150 units. O The average product for the sixth laborer is 100 units