The rainforest is currently decreasing at a rate of 27% per year. if there are currently 250,000 square miles of rainforest, then how many square miles of rainforest will their be in t years

a. f = 250,000(1.7)t
b. f = 25,000(0.73)t
c. f = 250,000(0.73)t
d. f = 250,000(0.27)t