Question 1 Bike-sharing has gained popularity in many cities since the last few decades. It can be seen as a means to promote a healthy lifestyle by involving more physical activity benefits and to mitigate environmental problems such as air pollution and traffic congestion. Yet, managing public bikes for sharing is not easy. There are many factors (e.g. socio-demographic, weather, land use) that affect user demand. In practice, a lot of challenges have to be overcome by bike- sharing companies in order to make the bike-sharing business sustainable. (a) Identify one (1) potential business problem faced by bike-sharing companies and describe how this problem would bring negative impacts to the society, if unsolved. (10 marks) (b) Based on the problem identified in (a), give an example on: (i) how descriptive data mining can be used to solve the problem. (10 marks) (ii) how predictive data mining can be used to solve the problem. (10 marks)