I’m pretty sure B.
If I’m wrong someone else can give the answer.
A
PLEASE MARK ME AS BRAINLIST ANSWER
In germany it was called Wandel durch Annäherung
They Made a contract called Grundlagenvertrag
<h2>Answer:</h2><h2><em>Option</em><em> </em><em>c</em><em> </em><em>(</em><em>by</em><em>)</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>answer</em><em> </em><em>hope</em><em> </em><em>it</em><em> </em><em>helps</em></h2>
They were relocated or died; decreased