This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiopulmonary resuscitation and mechanical ventilation, Subject name: Anaesthesia
About CPAP all are true except 
Select and explain. 
A. Given prophylactically in all preterm with respiratory distress, B. Staed with Fi02 50-60%, C. Given in infants less than 28 weeks and less than 1 kg weight, D. Improves oxygenation and improves lung compliance
C: Given in infants less than 28 weeks and less than 1 kg weight
Answer: C: Given in infants less than 28 weeks and less than 1 kg weight 
Explanation: CPAP is used for the infants whose lungs are fully developed.