Question about Materials of C4C30 Exam

Dear All,

Hope you are well,
I am going to take a part in C4C30 exam, but I am a little confuse about materials.

As I found I need to read the handbooks in LearningHub

Can anyone explain me:
- Does Business version(Hub040) have access to full Handbook document of C4C30 or for sure I need to buy Professional Vesrion(Hub030)?
- The handbooks are different from the PDF of PDI that is released by SAP?
- In learning Hub do we have access to some samples? (Not the sample that is free and have just five question)
Any help would be appreciate.

Regards
Sin