6. Sri Petaling has 125000 populations at midpoint population. A total of 2810 of the population have contracted with rotavirus. There were 300 death within the last one year and of the 300 death, 60 people had died because of rotavirus. a) What is the annual mortality rate? (2 marks) b) What is the annual mortality rate from rotavirus? (2 marks) c) What is case fatality rate from rotavirus? (2 marks)