<prompt> Which one of the following is true of Transient Tachypnea of Newborn TTNB -It is the commonest respiratory disorder caused by absence of surfactantIn premature babies, it is often fatalOnset of respiratory distress is immediately after bih and it rarely lasts beyond 48 hrsIt often leads to chronic lung disease  <response>: Ans. is c i.e., Onset of respiratory distress is immediately after bih and it rarely lasts beyond 48 hrs 