Read the following context and choose the best option to answer the question.
Context: He would stand in front of us whenever another dog was near by and would not let any other dogs come close without a quick inspection . When it came to strange people he did n't know , he was more than happy to be friendly but he constantly kept his guard up . Staying by our side when new people were near just in case . In all the time we had him , he only warned one person to get away . He even took care of you if you were sick ... Well , in his own way .
Question: What may be a fact about this person ?
Options: 
- None of the above choices .
 - They had to give their dog up for adoption .
 - They are talking about their previous dog .
 - They are upset about giving up their dog .


They are talking about their previous dog .