An increase in a country's real interest rate reduces that country's net capital outflow

Which of the following exemplifies the tragedy of the commons?

A) Residents of the southern coast of Alaska receive only one public broadcasting signal which may be eliminated altogether if government funding is cut. B) The Lakeview Estates community is growing so fast that the city's only fire station is not able to keep pace with the population growth in the community. C) British citizens receive free universal health care administered by the government. D) The Tibetan Antelope, distinguished for its fur which is commonly used as a light wool, is a target for poachers.

The above table shows Homer's utility from boxes of doughnuts. The marginal utility that Homer receives from the third box of doughnuts is equal to

A) 75. B) 25. C) 20. D) 3.