Choose the sentence with the best word.
1 Given that investigators found no traces of forced entry, what could it have been other except an inside job?
2 Investigators found no traces of forced entry, what could it have been otherwise an inside job?
3 Given that investigators found no traces of forced entry, what could it have been other than an inside job?
4 That investigators found no traces of forced entry, what could it have been other from an inside job?