5. Studies to fit a logistic model to a particular species of the fish population have yielded N = 146 1+ 3 89-3.217 : Where / is measured in years and / is measured in thousands of tons of fish. At what time was the population growing the most rapidly? Round your answer to two decimal places. a) 1 = 0.54 year b) 1 =0.02 year c) 1 =0.32 years d t =0.16 year