The Centers for Disease Control (CDC) evaluates the marginal cost effectiveness of vaccinating all people against certain diseases. If the marginal benefit is set at $5,000, which generalization explains why the CDC does not mandate vaccination of 100% of the people? A) At low vaccination coverage rates (0-70%), the marginal cost is greater. B) At high vaccination coverage rates (70-100%), the marginal cost is less. C) At 100% vaccination coverage, the cost per case prevented is less than the marginal benefit. D) At 100% vaccination coverage, the cost per case prevented is greater than the marginal benefit.

Which statement in the passage best reflects sumer's opinion of the dred scott decision? a."i speak what cannot be denied." b."[the] judgment was sustained by a falsification of history." b."the opinion was more thoroughly abominable than anything history." i speak what cannot be denied when i declare that the opinion of the chief justice in the case of dred scott was more thoroughly abominable than anything of the kind in the history of courts. judicial baseness reached its lowest point on that occasion. you have not forgotten that terrible decision where a most unrighteous judgment was sustained by a falsification of history. -charles sumner, 1865