Opportunity costs are A) always marginal costs. B) never ...

[Collmarie]

Opportunity costs are
 
  A) always marginal costs.
  B) never marginal costs.
  C) not related to marginal costs.
  D) sometimes marginal costs.
  E) sunk costs.

Question 2

Which of the following expenditure components of GDP can be negative or positive?
 
  A) Consumption expenditure
  B) Investment
  C) Government expenditure on goods and services
  D) Net exports of goods and services
  E) None of the above because expenditure can never be negative.

[joechoochoy]

Answer to Question 1

A

Answer to Question 2

D