The Current View on Whether Changes in the Psychological Atmosphere

The current view on whether changes in the psychological atmosphere are the basis for improvement in asthmatic symptoms suggests that

A) separation from the parents produced changes because the parents were causing the asthma.
B) separation may have been successful because the surrogate parents were able to achieve increased compliance with medical regimens.
C) changes in the psychological/home environment cannot affect asthma symptoms.
D) psychological factors play no role in the understanding of asthma management.