Facing keen competition, the University of Hong Kong (HKU) decides to make its program more attractive by promising all undergraduates internship opportunities and job placement services before they graduate. Implementing the new services raises the operating costs and therefore the HKU increases its tuition fees by 15%. As a result, student enrollment increases by 25%. Is the price elasticity of demand for HKU program elastic, inelastic or indeterminate? Explain your answer.