What was the primary cause of the hundred years war?

i know this is a late response.  for future reference of another who is looking for the right choice.

A.  England and France disagreed over where their border was.

B.  England and France disagreed over who the rightful pope was.

C.  The people of France blamed England for causing the Plague.

D.  The king of England also claimed to be the king of France.

The correct choice is D.

answer; the government can clearly justify the restriction;