Why is history open to ongoing and changing interpretations?

AChanging values limit interpretation.
BNew evidence is not available.
CPrimary sources are determined to be unreliable.
DRevisionists are overruled by traditionalists.
ETraditional interpretations are questioned by revisionists.

Verified Answer :

The main reason why history is open to ongoing and changing interpretations is because "e) Traditional interpretations are questioned by revisionists"--mostly due to the fact new evidence can arise. 

e) Traditional interpretations are questioned by revisionists.