I think it is C. hope this helps!
I'm sure the answer is there are no public documents. because if there was no public documents how would we be able to research and learn about it.
A process in which congress must vote on an amendment and have a 2/3 majority in approving it.
Assuming that you want this simplified...


Use the FOIL method and combine like terms:


And your final answer is: 
presidential candidate's tax records