Exercise Three - Object Orientated Programming a) An Alpha has a Beta. A Beta is a Gamma. A Gamma many or may not have a Delta. b) A car has a steering, an engine and a wheel. A wheel is a circle. Sometimes a steering has a n airbag, but not always. c) A customer is associated with one or more account, and an account is associated with just one customer. Consider each of the above descriptions of requirements, then carefully construct the respective relationship diagram using UML.