What Is Meant When We Say That "Many Countries, Especially

What is meant when we say that "many countries, especially lower-income countries, face a triple-burden of disease"?

A) That these countries face an important amount of zoonotic and noncommunicable disease
B) That these countries face a significant burden of communicable and noncommunicable diseases and a significant burden of injury
C) That these countries face a significant burden of communicable, maternal, and neonatal conditions
D) That these countries face a significant burden of neonatal, maternal and child health concerns