Evaluate whether the following statement is true or false: (Each correct answer =0.5 Mark) 8. A demand curve always has a negative slope except in exceptional cases. □ True □ False 9. A production possibility frontier shows all the possible combination of two goods or two options available at one point in time. □ True □ False 10. While total utility decreases the marginal utility 10. While total utility decreases the marginal utility increases from using extra unit of a good. □ True □ False 11. Bread and tea are substitute products because a consumer can use bread instead of tea. □ True □ False 12. The shape of the production possibility curve is convex. □ True □ False 13. An indifference curve shows how the consumers can purchase any combination of two goods with less satisfaction also. True □ False