Which of the following statements is true of the effect of changes in demand and supply on price?

• A.a decrease in supply will lead to the fall in price and a fall in the quantity bought and sold
• B.an increase in demand will lead to a fall in price and in the quantity bought and sold
• C.a decrease in demand will lead to a rise in price and in the quantity bought and sold
• D.an increase in supply will lead to a fall in price and a rise in the quantity bought and sold