Given the table below, what is the total fixed cost when 400 units of output are produced?  

In economics, the concept of opportunity cost is:

a. negated by ensuring that the government has a role in a capitalist society. b. defined to be the highest-valued alternative that must be forgone when a choice is made. c. best illustrated by knowing why consumers choose one good over another. d. quantifiable only if you know the real dollar price of the goods and services you are giving up to consume something. e. the methodology that government economists use to determine the total amount of the national debt.

In a two-dimensional graph showing the relationship between income and consumption in the economy, what is shown on the vertical axis and what is shown on the horizontal axis?

Please provide the best answer for the statement.