4 points) The conditional probability density functions of two classes C1 and C2 are shown in the figure below, with P(x|C1) N (1.5, 0.8) and P(x|C2) N (0.9, 1.3). (a) Assuming the priors are equal, predict which class (C1 or C2) the data point x = 0.5 (illus- trated with the green dot) belongs to. Briefly explain why. (b) What if the priors are P(C1) = 0.6 and P(C2) = 0.4, respectively