It is determined that a mobile application needed to support the Sales, Marketing and Finance departments will cost $60,000. The Sales department has 20 employees and all employees will need the application. Likewise, all 10 of the Marketing department employees will need the application. Only 1/3 of the Finance department is interested in the mobile application. The Finance department has 30 employees. The CIO has decided to fund the mobile application using either the allocation method or chargeback method. Which funding method does each department wish the CIO will choose to use and why?