【单选题】Under the NHS system, if one needs medical attention, he/she first ______________. If the problem cannot be solved, the doctor will ____________________.
A.
goes to his/her general practitioner; arrange a referral for the patient.
B.
has the generalpractitioner come to see him/her; ask the patient to go to hospital by himself/herself.
C.
asks a GP to give treatment or prescribe medicine; ask an ambulance.
D.
goes to a pharmacy; arrange a referral in the hospital for the patient.