Which of the Following Is True of the Research on the Stability

Which of the following is true of the research on the stability of the five personality factors as proposed by Costa and McCrae?

A) Extraverted adults tend to become far more introverted as they get older.
B) Agreeableness increases during later years.
C) Neuroticism declines during middle adulthood.
D) Conscientiousness tends to decrease in early and middle adulthood.