Which Hidden property expression should you use for the report header?

You are developing a SQL Server Reporting Services (SSRS) sales summary report.
The report header consists of several images.
You need to ensure that the header of the report is hidden when a user exports the report to
PDF format.
Which Hidden property expression should you use for the report header? {More than one
answer choice may achieve the goal. Select the BEST answer.)

A.
=(GlobalsIRenderFormat.IsInteractive = False)

B.
= (Globals!RenderFormat.Name = “PDF”)

C.
=False

D.
=True