(Consider This) Governments' Main Economic Concern About Low Birthrates Is

(Consider This) Governments' main economic concern about low birthrates is that

A) in a few decades, there will not be enough working-age adults to support pension responsibilities to retirees.
B) the smaller population makes the economy more vulnerable to foreign takeover.
C) a declining population will reduce worker productivity.
D) smaller populations are more susceptible to epidemics.