C. The following is a description of some data requirements for a chain of hypermarkets. (a) A company manufactures one or more cakes, and each cake is manufactured and marketed by exactly one company. (b) Cakes are sold in hypermarkets. Each hypermarket has a unique identification. Every hypermarket sells one or more cakes, but some hypermarkets do not sell every cake. (c) Cake sales must be recorded by invoice, which are kept as a record by the hypermarket. An invoice clearly identifies the cake, chief, and customer, as well as the date it is filled (d) Chief produces cakes for customer. A Chief can produce one or more cakes for a customer and a customer can get one or more invoices, but a invoice is written by only one chief (e) Cake manufacturer companies may have long-term contracts with hypermarkets and a hypermarket can contract with zero, one or more companies. Each contract is uniquely identified by a contract number Draw the appropriate entity-relationship (E-R) diagram. Clearly show all cardinality constraints, cardinality limits, and existence dependencies (10 points)