Which sentence uses a comma correctly to set off an introductory phrase? 1. First, of all you haven't told me where to meet you after the concert. 2. Parents, teachers, and students will all meet back In the auditorium after lunch. 3.On the other hand, we could just wait until my dad can give us a ride. 4. Jordan, who had never been a very good sport, saId," I didn't want to be on the chess team anyway."