Can you help with this question?

4 Sits Departingnhttps://portal.onh.c. RME Central Sales Department -- M Macdon @ Casell - Bourgault S LifeWorks Community Invest. ADP prehensive Problem i Saved The graph below shows the marginal private benefits and the marginal private costs per year of a program at a flight-training school in London. Suppose research indicates that the marginal external benefits from having well-trained pilots is $4,000 per student. O 14000 Tools 12000 MSB MSC $20000 8000 Tuition fees and costs 6000 4000 MPC 2000 MPB 400 800 1200 1600 2000 2400 O Number of students to search 9