Which three statements are true about single-row functions? (Choose three.)

[answerhappygod]

Which three statements are true about single-row functions? (Choose three.)

A. They return a single result row per table.
B. They can be nested to any level.
C. They can accept only one argument.
D. The argument can be a column name, variable, literal or an expression. E. They can be used only in the WHERE clause of a SELECT statement. F. The data type returned can be different from the data type of the argument.