Assertion. Single row functions when applied on a column in a table, yield multiple values equal to number of rows in the table.

Reason. Single row functions work with individual rows and yield values accordingly.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Both A and R are true and R is the correct explanation of A.

Explanation
When a single row function is applied to a column in a table, it produces output for each row. Therefore, if there are n rows in the table, the single row function will yield n values, one for each row, because single row functions work with individual rows of a table.