Read this quotation from paragraph 17 of the excerpt from The Piano Shop on the Left Bank. "I thought, this is a kind of love; and, as in love, my sense amplified and enhanced the love object, all with an insouciance and willing enthusiasm."

Why does the narrator use a metaphor to describe his response to playing the piano?

A) To explain how he is able to remember a piece of music

B) To show how sharing music increases enjoyment

C) To suggest that owning a piano can spark enthusiasm

D) To reveal the depth of his feelings towards the piano