Could you please help me understand how option D is incorrect for question 3? I agree that option C is right as well, however the 3rd para also mentions that "This exchange led to both the aristocracies that would come to control Europe for centuries to come and the rise of a dedicated warrior class, whose militaristic tendencies would be partly responsible for the years and years of warfare that would wrack Europe." Hence weren't the kings also partly responsible for the wars that wracked
...
...
