3- (10 pts) Suppose that there are two companies that produce mobile phones: Brand A and Brand B. Explain how each of the following events will affect the market for Brand A phones by using supply and demand diagrams (mention the changes in equilibrium price and quantity): a) Price of Brand B phones increased. b ) Brand A's factory's production capacity dropped because of a shortage in raw materials supplies. c) Brand A has developed a new technology that allows to assemble the phone's components in a cheaper way