Select the correct option w.r.t. Age pyramids: a-stable, b-Expanding, c-Declining

Correct option is A. a- Expanding, b-stable, c-Declining
Population pyramid or age pyramid is a way of depicting the age-sex structure of a population. It consists of two horizontal histograms, placed side by side, indicating the number of persons in each age group. Conventionally, males are shown on the left histogram, and females are shown on the right.
Expanding age pyramids depict populations that have a larger percentage of people in younger age groups. Populations with this shape usually have high fertility rates with lower life expectancies.
Declining age pyramids depict populations where there is a lower percentage of younger people. Constrictive population pyramids show declining birth rates, since each succeeding age group is getting smaller and smaller.
Stable age pyramids are those that show a somewhat equal proportion of the population in each age group. The population is stable.