Study the table below then answer the following questions: (Minimum Support = 40% Minimum Confidence = 40%)

Transaction ID Items Bought 1 A,B,C T 2 A,B,C,D,E T 3 A,C,D T 4 A,C,D,E T 5 A,B,C,D

(a) Find all the frequent item sets using Apriori algorithm. Use tables to represent Ck and Lk. (b) Generate all possible decision rules from each of the frequent itemsets you obtained from the previous questions along with their confidence.