Write the next sentence in the following story.

How to treat a conscious choking infant
Notice if the infant is coughing or crying.
If so, wait. The infant may expel the foreign object he or she is choking on.

Pick from:
i. The infant may also cough and cry uncontrollably while choking. The infant may also make louder and louder sounds that may seem to go on indefinitely..
ii. This is because choking objects penetrate the rigid lining of the esophagus, giving them protection against the sticky secretions. A child breathing in through her mouth might not be able to choke on foreign objects..
iii. Also observe if the infant squirms around or fumbles. Growling or whimpering can also indicate an infant is choking..
iv. Do not try to dislodge anything from the baby's throat at this point as the attempt may just push the item down further. Proceed with steps to treating a choking infant only when it is guaranteed the infant is choking... The answer should be
iv.