python

Question 5 1 pts Suppose you have a table "t" with columns 'A' 'B' and 'C' and row indexes 'a', b' and 'C' Why does "t[['A']['a'l" produce an error message but "t['A']['a'l" does not produce an error? You need to select all correct statements: a "t[['A']]" is a table and so "t[['A']['a']" tries to access column 'a' of t[['A'l] which does not exist a "t[['A']]['a'l" tries to access column 'a', but "t[['A']]" is a series (column 'A' of t) and a series has no columns we could access row 'a' of t[['All with t[('A)).loc['a') we could access row 'a of t[['A'll with ta'liloc['a'l "t['A']" is a series (column A of t) and "t'Alal accesses row 'a of this series