The table gives population data from the United Nations. | | low-income countries | lower-middle-income countries | upper-middle-income countries | high-income countries | |---|---|---|---|---| | rate of population change (% per year) | 2.7 | 1.5 | 0.8 | 0.5 | | life expectancy (years) | 61 | 67 | 74 | 80 | | death rate (per 1000 population) | 9 | 8 | 7 | 8 | | under-5 mortality (per 1000 live births) | 90 | 59 | 18 | 6 |

1. (a)As countries move from low income to high income, which indicator shows a value that does not represent the expected trend? A the rate of population change in upper-middle-income countries B the life expectancy in high-income countries C the death rate in high-income countries D the under-5 mortality in upper-middle-income countries[1]