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: Pediatrics
[{'content': 'Which of the following findings is diagnostic of iron deficiency anaemia? \nSelect and explain. \nA. Increased TIBC, decreased serum ferritin, Transferrin ferritin index > 2, B. Decreased TIBC, decreased serum ferritin, Transferrin ferritin index <1, C. Increased TIBC, increased serum ferritin, Transferrin ferritin index >1, D. Increased TIBC, decreased serum ferritin, Transferrin ferritin index >1', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Iron deficiency anaemia\nTIBC - Increased\nSerum ferritin - decreased\nTransferrin ferritin index >2', 'role': 'assistant'}]