Which of the following demographic growth pattern

Which of the following demographic growth patterns is most suitable for the long thin powder fuse analogy？

A．A virtually stable or slightly decreasing period and then a sudden explosion of population.

B．A slow growth for a long time and then a period of rapid, dramatic increase.

C．Too many people on earth and a few rapid increase in the number added each year.

D．A long period when death rates exceed birthrates and then a short period with higher fertility and lower mortality.

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