9. There are 6 consumers (A, B, C, D, E and F) with liner individual demand curves. A's quantity demanded is positive only when price is lower than 40. B's quantity demanded is positive only when price is lower than 35. C's quantity demanded is positive only when demand is lower than 30. D's quantity demanded is positive only when demand is lower than 25. E's quantity demanded is positive only when demand is lower than 20. F's quantity demanded is positive only when demand is lower than 15.How many kinks has the market demand? - a. 5e b. 4 c. 3 d. 2 e. 6