What causes the Tragedy of the Commons? (i) Social and private incentives differ. (ii) Common resources are not rival in consumption and are not excludable. (iii) Common resources are not excludable but are rival in consumption

The labor force participation rate is the fraction of the population over 16 years of age that is looking for work

Indicate whether the statement is true or false

The above figure shows the marginal social benefit and marginal social cost curves of doughnuts in the nation of Kaffenia. At Kaffenia's efficient quantity of doughnuts

A) total consumer surplus is zero. B) total producer surplus is zero. C) consumer surplus exceeds producer surplus by the greatest possible amount. D) the sum of consumer surplus and producer surplus is maximized.