On usual days, Cake Shop A sells its cakes for $400 each, and it sells 50 cakes per day. On Mother's Day, the price doubles to $800 per cake, and it sells 200 cakes on the day. a Sketch a demand-supply diagram to illustrate the doubling in price for Cake Shop A's cakes on Mother's Day. (7 marks) b Based on the above information, what can we conclude about the price elasticity of demand and the price elasticity of supply of Cake Shop A's cakes? Can we calculate the price elasticity of demand and price elasticity of supply? Explain your