Please choose the correct ending to complete the given sentence: Putting in contact lenses: The boy holds open his eyelids and places in a contact lens. the man

Ending1: puts a ring into the third eye. Ending2: takes out the contact lens with his thumb and brushes he lens with his finger. Ending3: opens the eye and place in a contact lens before putting it on the boy's finger. Ending4: tilts back his head and closes his eyes to adjust the contact lens.

Answer format: ending1/ending2/ending3/ending4