The number of citizen (N) of Barangay Tondo in t years is predicted to increase and can be modeled by the function N(t) = 7t^4 - 4t^3 + 150 t +17,500. After 3 years, how many citizens will be residing now at Barangay Tondo? A. 19,000
B. 18,409
C. 20, 509
D. 19, 409