What is the Apriori principle? How is it used by the Apriori algorithm for frequent pattern mining? What are the limitations of Apriori approach? Use the APRIORI algorithm to generate strong association rules from the following transaction database. Use min_sup=40% and min_confidence=75%.

Transaction ID	Items Purchased
T1	Bread, Milk, Eggs, Butter
T2	Bread, Milk, Cheese
T3	Milk, Eggs, Cheese, Yogurt
T4	Bread, Butter, Cheese
T5	Bread, Milk, Butter, Yogurt