Based on the current population and the rate of decrease, the population in five years will be 81,537 people.
This can be found by the formula:
= Current population x ( 1 - rate) ^ number of years
Solving gives:
= 100,000 x ( 1 - 4%)⁵
= 100,000 x 0.8153726976
= 81,537 people
In conclusion, option B is correct.
Find out more on population growth at https://brainly.com/question/24328512.