Jonah saw a man unconscious sprawled on the grass near a walkway. He called out but the man did not answer. The man was not breathing so Jonah called 911. While he waited for help to arrive, he made a fist, put it on the man’s chest, and placed his other hand over his fist and did compressions.

What should Jonah have done differently?

He should have done compressions before calling 911.
He should have done rescue breathing instead of hand compressions.
He should have used the heel of his hand instead of a fist.
He should have used two fingers while doing compressions.