Desirable property of money

Suppose that the Australian economy initially uses 50 billion hours of labor to produce $5 trillion of real GDP. If 50 billion more hours are employed and Australia's real GDP increases by $4 trillion more,

A) Australia's production function exhibits diminishing returns. B) Australia's production function exhibits increasing returns. C) Australia has an Okun Wedge of $1 trillion. D) Australia has positive Lucas Wedge. E) Australia's production possibility frontier has a positive slope.

If the price of a good falls, the marginal utility per dollar received from consuming a specific unit of that good

a. also falls b. stays the same c. rises d. will rise or fall, depending on the consumer e. remains unchanged, provided the consumer buys no more of the good