4. Which two statements are true regarding single row functions? (Choose two.)
A. They a ccept only a single argument.
B. They c an be nested only to two levels.
C. Arguments can only be column values or constants.
D. They always return a single result row for every row of a queried table.
Always return one result row for each row of the query table . Correct.
E. They can return a data type value different from the one that is referenced.
The returned data type value can be different from the previously referenced data type, correct.
Answer: DE