We are given the following transactions (40 points) Transaction Items 1 X1,x2,X3 2 X2,X3,X4 3 X4,x2,X5 4 X3,X1,X5,X2 5 X6,X5,X3,X1 g. If we prune the rule {x1,x2} -> {X3} based on minconfidence threshold, which of the following can we definitely prune, i) {X1} -> {X2,X3) ii) (X1) -> {X3) iii) (X3) -> {x1,x2) h. Is the itemset {X2} i) maximal and ii) closed