This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'A 5-year-old child is brought to the hospital with the complaint of fever, cough, breathlessness and  chest  pain.  On  examination  he  is  found  to  be  dull,  but  irritable  with  fast  pulse  (116/min), rapid breathing (RR 50/min) and indrawing of lower chest during inspiration, wheezing, crepitations and  mild  dehydration.  Body  temperature  is  40°C  (104°F).  The  paediatrician  makes  a  provisional diagnosis of acute pneumonia and orders relevant haematological as well as bacteriological investigations.  He  decides  to  institute  antibiotic  therapy.In case he selects an antibiotic which can be given orally as well as by i.m. or i.v. injection,which  route  of  administration  will  be  most  appropriate  in  this  case? \nSelect and explain. \nA. Oral, B. i.m., C. i.v., D. s.c.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Since the child is seriously ill, a fast and more predictable action of the antibiotic is needed;\xa0a parenteral route of administration is appropriate.\xa0Moreover, oral dosing may be difficult\xa0in\xa0 this\xa0 case\xa0 as\xa0 the\xa0 child\xa0 is\xa0 dull\xa0 and\xa0 irritable.\xa0 Entering\xa0 a\xa0 vein\xa0 for\xa0 i.v.\xa0 injection\xa0 is\xa0 relatively\xa0difficult\xa0 in\xa0 children,\xa0 particularly\xa0 in\xa0 the\xa0 presence\xa0 of\xa0 dehydration.\xa0 Therefore,\xa0 the\xa0 antibiotic\xa0may\xa0 be\xa0 injected\xa0 i.m.\xa0 However,\xa0if\xa0 an\xa0i.v.\xa0 line\xa0 is\xa0 set\xa0 up\xa0 for\xa0 rehydration,\xa0the\xa0antibiotic\xa0may be\xa0administered\xa0 through\xa0 the\xa0 i.v.\xa0 line.', 'role': 'assistant'}]