(1) Suppose that there are three groups of people in a society. They are group A, B and C. There are two policy alternatives being considered. The utility for each group under different policies and the population (in million) of each group are given by the following table: l Population l Policy 1 Policy 2 A 20 150 110 B 50 100 110 C 10 50 45 Under a Utilitarian social welfare function assigning equal weights to each individual, which policy should be adopted? Please show your reasoning and/or calculation. (8 marks)