Read the following context and choose the best option to answer the question.
Context: He wanted us to be a family and whatnot before they ship off to Alaska tomorrow morning . Called David as soon as they let me go and asked for a rain check , then came straight home like a good little family member ... only to find that The Dad had decided to go in to work , The Mum had gone ... somewhere , and The Brother was out at a friend 's house . Nice .
Question: Why was the narrator 's father not at home ?
Options: 
- He was at work .
 - He was on a ship .
 - He was on his way to Alaska .
 - He was in Alaska .


He was at work .