Which of the following is the utility-maximizing rule that Andrew should follow while choosing the optimal quantities of these two goods? (Note: In the answer options that follow, MU stands for "marginal utility.") MU of WaterPrice of Water=MU of JewelleryPrice of Jewellery MU of WaterPrice of Jewellery=MU of JewelleryPrice of Water MU of Water=MU of Jewellery (MU of Water)(Price of Water)=(MU of Jewellery)(Price of Jewellery) Since water costs little and jewellery is expensive, it must follow that when people choose their optimal quantities of water and jewellery to purchase, the marginal utility they receive from the last piece of jewellery they buy is than the marginal utility they receive from the last gallon of water they buy