If the current population is 80000, what is the likely population three years hence?

In a medium-size township, the trend of annual immigration is an addition of 20% of the population as it was at the beginning; also 15% of the population as it was at the beginning is estimated to relocate elsewhere every year. If the current population is 80000, what is the likely population three years hence?
(a) 90000
(b) 91200
(c) 92000
(d) 92610