About Question enthuware.ocpjp.v11.2.3133 :

[hsnclk]

You cannot have duplicate statements in a module info. Lines marked //2 and //3 are exporting the same module in different ways and are therefore in conflict. One of them must be removed.

The explanation of the option D requires to be corrected. Because as I know we export package not module. I think it was written by mistake. I just wanted to inform you.

[admin]

You are right. It must be package. Fixed.
thank you for your feedback!