Read the following context and choose the best option to answer the question.
Context: Mum tried to convince me it had probably snuck in once I opened it , but I think they are fucking gross and can squeeze through anything . I long for the days we had a rat loose in the house . That was my fault , I adopted him after he was terrorised after my cats and left him for an afternoon in a cardboard box to recover . He promptly escaped and took over the house for a couple of months .
Question: What may be the reason I adopted the rat ?
Options: 
- I felt bad for him .
 - I wanted to own him .
 - None of the above choices .
 - I did n't like him .


I felt bad for him .