Arnold kim began blogging about apple products during his fourth year of medical school. kim's website, macrumors. com, became so successful that he decided to give up his medical career and work full time on his website, despite the nearly $200,000 he had invested in his education. in making his decision, the $200,000 he spent on his education

a. should be ignored since it represents a sunk cost.
b. should be considered since it is money he has spent and needs to recoup.
c. should be ignored only if kim can earn more than $200,000 by running his website.
d. should be considered since it is money he could have used to invest in his website.

United states is your answer

The business cycle is the periodic but irregular up-and-down movement in economic activity, measured by fluctuations in real gross domestic product (gdp) and other macroeconomic variables. a business cycle is typically characterized by four phases—recession, recovery, growth, and decline—that repeat themselves over time. economists note, however, that complete business cycles vary in length. the duration of business cycles can be anywhere from about two to twelve years, with most cycles averaging six years in length. some business analysts use the business cycle model and terminology to study and explain fluctuations in business inventory and other individual elements of corporate operations. but the term "business cycle" is still primarily associated with larger (industry-wide, regional, national, or even international) business trends.

As a costumer i would say c.hope it !