Suppose Katie, Kendra, and Kristen each purchase a particular type of cell phone at a price of $80 . Katie's willingness to pay was $100, Kendra's willingness to pay was $95, and Kristen's willingness to pay was $80 . Consumer surplus for the three individuals is

Refer to the scenario above. Which of the following will you choose in order to maximize return?

A) Plan 1 B) Plan 2 C) Plan 3 D) Plan 4

Over the past century, the main factor responsible for rising living standards in the United States has been productivity growth

a. True b. False Indicate whether the statement is true or false