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
Which of the following does not describe an infant "at risk" ? 
Select and explain. 
A. Third child, B. Bih weight less than 2.5 kg, C. On aificial feed, D. Twins
A: Third child
Answer: A: Third child 
Explanation: Ans. is 'a' i.e., Third childIdentification of 'At Risk' InfantsBih weight < 2.5 KgTwinsBih order 5 or moreAificial feedingWeight below 70% of expected weight (i.e. grade II & III malnutrition)Failure to gain weight during 3 successive monthsChildren with PEM, Diarrhea.Working mother, one parent.Spacing of less than 1 year.