Which sentence is punctuated correctly?


A. "I would like to read a poem I wrote called Wedding Bells," my aunt explained.
B. "I would like to read a poem I wrote called 'Wedding Bells,'" my aunt explained.
C. "I would like to read a poem I wrote called Wedding Bells," my aunt explained.
D. I would like to read a poem I wrote called "Wedding Bells," my aunt explained.