Cоuntries Infаnt mоrtаlity rаte 1960-1980 Infant mоrtality rate 1981-1990 Infant mortality rate 1991-2010 Infant mortality rate 2016 Country A 21.6 20.3 19.1 18.3 Country B 19.5 16.1 14.1 12.7 Country C 10.8 9.8 7.9 8.1 Country D 14.6 10.9 9.9 9.5 Country E 12.7 11.3 11.0 10.7 * Note these numbers do not represent any current statistics. These numbers were manufactured for testing purposes only. Using the table above, which country showed a steady and significant decrease in infant mortality from 1960-2016?