The nurse is assessing a 71-year-old female client with ulcerative colitis. Which assessment finding related to the family will have the greatest impact on the client's rehabilitation after discharge ？（）
A．The family's ability to take care of the client's special diet needs.
B．The family's expectation that the client will resume responsibilities and role-related activities.
C．Emotional support from the family.
D．The family's ability to understand the ups and downs of the illness.