This homework question is confusing me because I feel like col1 might be another data set but at the same time its name makes it seem like it is a column. Either way, I can't tell if it would be considered a primary key or if the other cols (col2 and col3) are primary keys. The concept of primary keys is confusing to me

Q6 2 Points Suppose we observe the following code and output: > count (tbl, coll) |> summarize(all(n 1 FALSE > count (tbl, coll, col2) |> summarize (all(n 1 TRUE > count (tbl, coll, col2, col3) |> summarize(all(n 1 TRUE From this output alone, what set of columns forms a primary key for this table? O Col1 and Col2 O Col1, Col2, and Col3 O Col2 O Col1