As a Developing Country Passes Through the Demographic Transition, Which

As a developing country passes through the demographic transition, which of the following will occur?

A) Its age structure will change, but its growth rate will remain unchanged.
B) First, its birth rate will decrease, followed by its death rate.
C) Its birth and death rates will decrease simultaneously.
D) Its growth rate will first fall, but later recover.
E) First, its death rate will decrease, followed by its birth rate.