If f(t) =(t²+5t+2) (4t²+2) , find f'(t) f'(t) .
a) (2t² + 5t + 1) (4t² + 2)
b) (2t² + 5t + 1) (8t² + 4)
c) (2t² + 5t + 1) (8t² + 10t + 2)
d) (2t² + 5t + 1) (8t² + 6t + 2)