In an Investigation Using a Personality Scale to Measure Erikson's

In an investigation using a personality scale to measure Erikson's psychosocial stages of personality development, it was reported that:

A) Only five of Erikson's eight stages were validated
B) Scores on the intimacy subscale were higher for young adults than middle-aged adults
C) Scores on the generativity subscale were higher for young adults than middle-aged adults
D) a & b
E) a & c