The graph shows the marginal benefit curve for Jose and Sandra, who have identical individual marginal benefit curves for garbage pickups on their street per month. A graph shows quantity of garbage pick-ups per month along the horizontal axis and Marginal benefit along the vertical axis. The graph shows an MSB curve sloping down from quantity of garbage 0 pick-ups per month, Marginal benefit 100 dollars to quantity of garbage pick-ups 10 per month, Marginal benefit, 0 dollars. The graph shows an MB j curve and an MB s curve sloping down from quantity of garbage pick-ups 0 per month, Marginal benefit 50 dollars to quantity of garbage pick-ups 10 per month, Marginal benefit 0 dollars. Three coordinate points are plotted as follows: Marginal benefit 60 dollars, Quantity of garbage pick-ups 4 per month; Marginal benefit, 50 dollars, Quantity of garbage pick-ups 5 per month; Marginal benefit, 30 dollars, Quantity of garbage pick-ups 7 per month. What is Jose's marginal benefit of 4 pickups per month? $10 $20 $30 $50