Which statement about this vertical demand curve is true? Price of life-saving y Demand medicine $500 $400 $300 $100 $50 $25 30 pills Quantity of life-saving medicine a.) Quantity demanded remains exactly O the same, while price varies greatly. b.) The law of demand still holds O because when price changes, quantity demanded also changes. c.) Most products have a similar O demand curve. d.) There is still an inverse relationship O between price and quantity