What happens if a query with time-dependent attributes is executed but NO query key date is set?

What happens if a query with time-dependent attributes is executed but NO query key date is set?
A . The current date is used as key date.
B . The system displays only NON-time-dependent attributes.
C . The valid from date of the attribute is used as key date.
D . The system displays an error message.

View Answer

Answer: A