Worse comes to worse, we can just cancel the event and re-schedule another time. What is the grammatically correct sentence?
1) Worse comes to worst, we can just cancel the event and re-schedule another time.
2) Worse comes to worst, we can just cancel the event and re-schedule another time?
3) Worse comes to worse, we can just cancel the event and re-schedule another time?
4) Worse comes to worse, we can just cancel the event and re-schedule another time.