4. Based on Chapter '3" # 21 Show your work! Yesa'No answers without any explanations will not get any credits. a. Draw the relevance diagram corresponding to the tree below. C b. Reorder the distinctions so that they are in the order C, A, B. Calculate all of the relevant probabilities to complete the tree. 0. Are events A and B possibly relevant to one another given &? d. Are C and A possibly relevant to one another given &