Which statement is true about conditional advertisements?

Which statement is true about conditional advertisements?

A.
Conditional advertisements create routes when a predefined condition is met.

B.
Conditional advertisements create routes when a predefined condition is not met.

C.
Conditional advertisements delete routes when a predefined condition is met.

D.
Conditional advertisements create routes and withhold them until a predefined condition is met.

E.
Conditional advertisements do not create routes, they only withhold them until a predefined
condition is met.