Which of the models given below are graphical? Graph them. Which of these are decomposable? Discuss the independence relationships for all of the models. For each model, what marginal tables will provide valid inferences?

(a) [123][24][456]

(b) [12][13][23][24][456]

(c) [123][124][456]

(d) [123][24][456][15]

(e) [123][24][456][15][36]