Read the following context and choose the best option to answer the question.
Context: And of course , it is gratifying to realise that , even all those years ago , one had better taste than one gives oneself credit for.----------------Speaking of snippets of memory , something else . I have a very bad memory , and so I was trying to rack my brains for my happiest memory yet . To my surprise , I found it . When I was little , we had these two huge army trunks on our terrace .
Question: Why would the narrator being so nostalgic ?
Options: 
A. The narrator is thinking of meeting their love .
B. The narrator is thinking of childhood .
C. The narrator is thinking of their first kid .
D. The narrator is thinking of their first job .


B