Which of the Following Is Not True of the History

Which of the following is not true of the history of public health?

A) Public health interventions date back to the earliest recorded civilizations.
B) Public health as a defined field dates back to the Renaissance.
C) Public health was regarded as the safety net for health services for much of the last half of the 20th century in the United States.
D) The germ theory of disease had a major impact on public health in the late 19th and early 20th centuries.