In His Work Examining the Stability of Shyness in Early

In his work examining the stability of shyness in early childhood,Jerome Kagen and his colleagues have found that the behavioural inhibition temperament variable is:

A) completely unrelated to future behaviour patterns.
B) highly consistent and stable for the vast majority of children.
C) related to future behaviour patterns,but only for children rated as being extremely uninhibited.
D) related to future behaviour patterns,but only for children rated as being extremely uninhibited or extremely inhibited.