4. You have two brothers and two sisters. Your mother plans to divide a sum of money between her children in one of the ratios below. The ratios are written in descending order of the children's ages. A 5:4:3:2:1 B 12:9:8:4:3 C 9:8:6:3:1 D 6:5:4:3:2 a) If you are the eldest child, say which ratio you would choose. Give a reason for your answer. (3) b) If you are the middle child, say which ratio you would choose. Give a reason for your answer. (3) c) If you are the youngest child, say which ratio you would choose. Give a reason for your answer. (3) d) If each child receives a whole number of rands and no cents in each case, calculate the minimum sum of money that your mother is dividing. Show all your calculations. (3)​