The infant mortality rates per 1000 births in a town are shown over a period of years. Table 8.27 Year Mortality rate/1 000 births 1934 105 1939 93 1944 97 1949 74 1954 61 1959 59 1964 48 Draw a line graph to illustrate this informa- tion and comment on it, giving reasons for the trend it shows.(b) Why do you think that the infant mortality was given as a rate? (c) Using the line graph, answer the following questions: (i) During which period was there an increase in the infant mortality rate? (ii) During which period was there the largest decrease in the infant mortality rate? (iii) State the largest decrease in the infant mortality rate