Assume that Szmul Hertz has an MPC equal to 0.80 . If he normally earns $40,000 per year, but is laid off for part of 2000 and only earns $25,000 . his consumption for 2000 . according to Milton Friedman, will be

Which of the following statements is true?

A) A decrease in supply causes equilibrium price to rise; the increase in price then results in a decrease in quantity demanded. B) If demand increases and supply decreases one cannot determine if equilibrium price will increase or decrease without knowing which change is greater. C) An increase in demand causes an increase in equilibrium price; the increase in price causes supply to increase. D) If both demand and supply decrease, there must be a decrease in equilibrium price; equilibrium quantity may either increase or decrease.

Perfect competition is characterized by many firms and no barriers to entry.

Answer the following statement true (T) or false (F)