Question No 4 [6 marks] A transaction database from one grocery shop server is as follows: Transaction Id Items 1 2 3 4 5 6 7 8 9 10 Item1. Item2. Items Item2, Item4 Item2, Item3 Item1, Item2. Item4 Item 1. Item3 Item2. Item3 Item1, Item3 Item1, Item2. Item3, Items Iteml, Item2, Item3 Iteml, Item2. Item3, Item4, Item 5 Assuming a minimum support of 20% (i.e., 2 transactions out of 10). Calculate the frequent 1-itemset (L1). Calculate the frequent 2-itemset (L2). Generate the possible association rules and calculate their level of confidence