If the marginal social benefit of consuming a good or a service ...

[mrsjacobs44]

If the marginal social benefit of consuming a good or a service exceeds the marginal private benefit
 
  A) a positive externality exists.
  B) a negative externality exists.
  C) the sum of consumer surplus and producer surplus is maximized.
  D) the market achieves economic efficiency.

Question 2

If it costs Danitra 225 to create 4 necklaces and 275 to create 5 necklaces, then the marginal cost of producing the 5th necklace is 50.
 
  Indicate whether the statement is true or false

[dantucker]

Answer to Question 1

A

Answer to Question 2

TRUE