【单选题】

First aid may be defined as the immediate and temporary care given to a victim of an accident or serious illness until the supersedes of a physician can be obtaineD、First aid commences with the steadying effect upon the stricken person when he realizes that competent hands will help him. The emergency situation often causes confusion in the mind of the victim, things seem unreal and remote, and he often cannot think clearly and rationally for some time. The emotional reaction which results from a serious accident takes time to subside. Therefore, first aid is more than the physical attention dressing his injuries or making him comfortable. It is the general mental effect that the well-selected word of encouragement, the expression of willingness to help, the uplifting effect of the first aider’s evident capability can be given. The thoughtful for suggestions made to solve immediate problems, the information given concerning nearby physicians and hospitals, the telephone call to summon medical help or an ambulance or to notify a relative, these too are first aiD、The good first aider deals with the whole situation, the person and the injury. He knows what not to do as well as to do. Thus, he avoids the error so commonly made through well meant but misguided efforts. He confines his procedures to what is necessary, keeping the handling of injured parts to a minimum.

Which statement is true about first aidA．It usually makes the services of a doctor unnecessary.
B．It is usually done by someone who is not a doctor.
C．It is usually done by a doctor.
D．It is usually done by the victim himsel