Add the missing commas.

We were unable to put all our supplies into the suitcases because we had packed haphazardly.

1. We were unable to put all our supplies into the suitcases because we had packed, haphazardly.

2. We were unable to put all our supplies into the suitcases because, we had packed haphazardly.

3. We were unable to put all our supplies into the suitcases, because we had packed haphazardly.

4. No commas needed.