What Does Ainsworth's Research Suggest Is Highly Correlated to the Type

What does Ainsworth's research suggest is highly correlated to the type of intimate relationship you form in your adulthood? 

A)  the level of praise and encouragement you received as a child 
B)  whether or not your parents were divorced when you were a child 
C)  whether or not you developed a positive love role repertoire as a child 
D)  the type of attachment you formed as a child