Which of the following would be an excellent example of a lumpy input

Which of the following is a balance of payments account?

i. current account ii. past account iii. capital and financial account A) i only B) ii only C) iii only D) i and iii E) i, ii, and iii

At the utility maximizing equilibrium for two goods, X and Y, which of the following must be TRUE?

A) The marginal utility per dollar spent on X will exceed the marginal utility per dollar spent on Y. B) The total expenditure will be the same for each good. C) The marginal utility per dollar from X equals the marginal utility per dollar from Y. D) The marginal utility will be the same for each good.