In a Set of Research Studies Described in the Text

In a set of research studies described in the text, a group of two-year olds were initially categorized as being inhibited or uninhibited. Twenty years later, the participants

A) retained some of the basic brain properties relating to temperament that initially differentiated the two groups.
B) had the same chance of developing a personality disorder regardless of which group they were originally in.
C) were diagnosed with narcissistic and histrionic personality disorders more often if they were in the uninhibited group.
D) lost all of the basic brain properties relating to temperament that initially differentiated the two groups.