According to Smith and Hamon, Which of the Following Is

According to Smith and Hamon, which of the following is TRUE about family development theory?

A) Stages are the result of major changes in family size, changes in the developmental age of the oldest child, or changes in the work status of the breadwinner.
B) Tasks focus on what the family, as a unit, must accomplish, while taking into account the individual needs of the parents and children.
C) Change in family relationships is precipitated by either internal (such as biological growth) or external (through interaction with the environment) factors.
D) Transitions are the process(es) that form a bridge between the different states when something changes.
E) All of the above are true.