【单选题】In paragraph 4, 'When a single string in the tapestry of world history is unraveled by revision, the entire piece becomes a weaker one. ' means that______.
A.
history is an intertwined series of s coming together to form. a larger picture
B.
a loss of reliability in any single segment of history makes the entire historical record suspect
C.
once one piece of history is revised, others soon follow
D.
as soon as the integrity of the historical record is breached, it can never be fully recovered