What is the relationship between marginal social benefit, marginal private benefit, and marginal external benefit? A. MSB + marginal external benefit = MB B. Marginal external benefitminusMB = MSB C. MSB minus marginal external benefit = MB D. MBminus marginal external benefit = MSBlectricity has a negative production externality because ______. Question content area bottom Part 1 A. a marginal external cost lowers the marginal benefit from consuming it B. the marginal private cost of producing it increases as more of it is produced C. the marginal social cost of producing it exceeds the marginal private cost of producing it D. its marginal benefit decreases as more of it is consumed