Most of a Country's Citizens Have Died from Malnutrition or as the Result

Most of a country's citizens have died from malnutrition or as the result of violence. Which of the following conclusions can be drawn?

A) Their country has a problem with an adequate water supply for agriculture.
B) They live in a country where weather interferes with food crops.
C) They live in a developed country involved in a war.
D) They live in a developing country.