Alice Rossi Compared the Transition to Parenthood to Other Kinds

Alice Rossi compared the transition to parenthood to other kinds of role changes such as job changes or getting married. She concluded that

A) The transition to parenthood is no more stressful than a job change.
B) The transition to parenthood affects the husband-wife relationship more directly and pervasively than most other role changes.
C) Transition to parenthood is less stressful today than in the past because child-raising norms are now clearer and better known.
D) Both (a) and (c) above.
E) Both (b) and (c) above.