With Regard to GDP, GNP, and GPI, Which of the Following

Short Answer

With regard to GDP, GNP, and GPI, which of the following is correct?
The profits earned by a Canadian company abroad are included in GDP, but not in GNP.
Profits earned by foreign firms in Canada are included in GNP.
GDP and GPI both increased as a result of the BP oil spill in the Gulf of Mexico.
GDP has been increasing for many years, but GPI has been decreasing since the 1970s.
GNP, GDP, and GPI all measure essentially the same thing.