Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): The shape of the age pyramid reflects the growth status of the population.
Reason (R): For human population, the age pyramids generally show age distribution of males and females in a diagram.

 In the light of the above statements, choose the most appropriate answer from the options given below.

The shape of an age pyramid provides important information about the growth status of a population. A triangular age pyramid with a broad base with many young people indicates a high population growth rate. This is because the large number of young people represents a high number of potential parents who can contribute to future population growth. An urn-shaped age pyramid helps us understand that the population is declining. The wide top indicates a large number people are elderly and no more reproduction and the narrow base indicates that the population has very few potential parents to contribute to future growth. A bell-shaped age pyramid with almost equal number of individuals in the pre-reproductive, reproductive, and post-reproductive age groups represents a stable population.
An age pyramid represents the sex ratio of a population by displaying the number or proportion of males and females in each age group. The pyramid typically has a vertical line dividing each rectangle into two parts: the left side represents the male population, and the right side represents the female population.