In a learning theory project, psychologists discovered thatf(t) = 0.8 / (1+e^-0.2t)is a model for describing the proportion of correct responses, f(t), after t learning trials.a. Find the proportion of correct responses prior to learning trials taking place.b. Find the proportion of correct responses after 10 learning trials.c. What is the limiting size of f(t), the proportion of correct responses, as continued learning trials take place?