The burglar alarm went off just before 4 am , which was odd because it was n't set . Turned out the indoor alarm was sounding , but not the outdoor one . I rang the alarm company and the engineer suggested a couple of things to try out , which made no difference , so he said he would come out , although it would take him about 45 mins . A few minutes later , about 20 mins after it first went off , it stopped .
Why was the narrator up at such a tough hour ?
Pick the best answer from the following options:
- The inside alarm went off .
 - The external alarm sounded .
 - The burglar alarm company called them about an alarm .
 - None of the above choices .


The inside alarm went off .