The national anthem of Australia is now the tune of ______, but on regal and vice-regal occasions God Save the Queen must be played.

A．the general situation of eating disorders in the group of children
B．the reason why children are suffered from eating disorders
C．the steps parents should take to prevent their children from eating disorders
D．all of the above

A．Parents must encourage the children to express their feelings.
B．Parents must be deeply involved in their children' s problems.
C．Parents must pay more attention to their outlook to show their children the importance of appearance and weight.
D．Parents must teach their children to eat everything in their plates.