In 2010, the net national debt was about $9 trillion or approximately $29,000 per person

Which of the following is an example of an application of the ceteris paribus assumption?

A) an analysis of how price changes affect how much of a good people will purchase when all other factors are held constant B) an analysis of how people purchase more goods when prices decline and income increases C) After reading an article on the dangers of high-fat diets, an individual buys less red meat when prices increase. D) an analysis of how worker productivity increases when a firm invests in new machines and training programs

If the dollar per pound exchange rate changes from $1.50 per pound to $2 per pound, it implies that the dollar has appreciated against the pound.

Answer the following statement true (T) or false (F)