You are going for approval for registering a new company in Canada. Once the manager in the related government agency has created a requirement of the opening/role, it needs to go through multiple hierarchies for approval from HR, Finance, Business etc. Approval from all departments if comes positive then only the overall approval status of the requirement is positive. Discuss (give reasons) which Design pattern would you prefer while implementing the above scenario Show the UML class design of the above scenario. Implement the above code for the above scenario