Holding all other things constant, when the price level falls, interest rates: a. rise and firms want to borrow more for new plants and equipment and households want to borrow more for homebuilding. b. rise and firms want to borrow more for new plants and equipment and households want to borrow less for homebuilding. c. falls and firms want to borrow more for new plants and equipment and households want to borrow more for homebuilding. d. falls and firms want to borrow less for new plants and equipment and households want to borrow more for homebuilding.