In the following, a,b,c,d,e,f and g are items. For each of the following, answer TRUE or FALSE (no additional explanation needed) for whether the association rule has a confidence that is certain to be at least as great as the confidence of abcdefg and no greater than the confidence of a,b,c,d=>f? a) a,b,c=>d,e,f b) a,b,d=>c,e,f c) a.c,d=>efg d) b.c.d=>e.fg