What is the total cost at the break-even quantity calculated above?

In the long run,

a. an increase in the federal budget deficit can lower the interest rate and investment spending. b. an increase in the federal budget deficit can raise the interest rate and investment spending. c. a decrease in the federal budget deficit can lower the interest rate and raise investment spending. d. a decrease in the federal budget deficit can raise the interest rate and lower investment spending. e. a decrease in the federal budget deficit can lower the interest rate and lower investment spending.

As more satisfaction is achieved from consuming a good with diminishing marginal utility, then total utility

A. Increases at a decreasing rate. B. Is negative as long as marginal utility is decreasing. C. Decreases as long as marginal utility is negative. D. Decreases as long as marginal utility is positive.