The narrator in "The Black Cat" is unreliable. Which quote best represents this characterization?

A. "I alone fed him, and he attended me wherever I went about the house."

B. "-hung it because I knew that it had loved me, and because I felt it had given me no reason of offense."

C. "When it reached the house it domesticated itself at once, and became immediately a great favorite with my wife."

D. "I had walled the monster up within the tomb!'