A database has $5$ transactions. Let min$\_$sup $=60\%$ and min$\_$conf $=80\%.$

$($a$)$ Find all frequent itemsets using Apriori.

$($b$)$ List all of the strong association rules $($with support $s$ and confidence $c)$ matching the following

metarule, where $x$ is a variable representing customers, and item ${?}_i$ denotes variables representing

items $($e$.$g$.,"A","B",$ etc.$)$:

$)1)2)3$