The nurse explained how to position an infant with tetralogy of Fallot if the infant suddenly becomes cyanotic. Which statement by the father leads the nurse to determine he understood the instructions?

If the baby turns blue, I will lay him down on a firm surface with his head lower than the rest of his body

If the baby turns blue, I will hold him against my shoulder with his knees bent up toward his chest

If the baby turns blue, I will immediately put the baby upright in an infant seat

If the baby turns blue, I will put the baby in a supine position with his head elevated