If a purchase contract allows a buyer to accept less than a specified maximum "take" each month, buying a _____ would allow the seller to resell the excess at a _____ price

If MUx / Px = MUY / PY, then _____

a. the consumer should purchase the same quantity of X and Y b. the consumer should purchase less of X c. the consumer is maximizing utility d. the consumer should purchase more of Y e. the consumer is minimizing utility

Other things the same, the aggregate quantity of goods demanded decreases if

a. real wealth falls. b. the interest rate rises. c. the dollar appreciates. d. All of the above are correct.